57089978505 has 48 divisors (see below), whose sum is σ = 113125259520. Its totient is φ = 26090722944.

The previous prime is 57089978503. The next prime is 57089978531. The reversal of 57089978505 is 50587998075.

57089978505 is a `hidden beast` number, since 57 + 0 + 8 + 9 + 9 + 78 + 505 = 666.

57089978505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57089978505 - 2¹ = 57089978503 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (57089978503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1147119 + ... + 1195851.

It is an arithmetic number, because the mean of its divisors is an integer number (2356776240).

Almost surely, 2^57089978505 is an apocalyptic number.

It is an amenable number.

57089978505 is a deficient number, since it is larger than the sum of its proper divisors (56035281015).

57089978505 is a wasteful number, since it uses less digits than its factorization.

57089978505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52470 (or 52467 counting only the distinct ones).

The product of its (nonzero) digits is 31752000, while the sum is 63.

The spelling of 57089978505 in words is "fifty-seven billion, eighty-nine million, nine hundred seventy-eight thousand, five hundred five".