57089978567 has 4 divisors (see below), whose sum is σ = 57111467856. Its totient is φ = 57068489280.

The previous prime is 57089978531. The next prime is 57089978591. The reversal of 57089978567 is 76587998075.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57089978567 - 2⁶ = 57089978503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57089978567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57089978597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10740659 + ... + 10745972.

It is an arithmetic number, because the mean of its divisors is an integer number (14277866964).

Almost surely, 2^57089978567 is an apocalyptic number.

57089978567 is a deficient number, since it is larger than the sum of its proper divisors (21489289).

57089978567 is a wasteful number, since it uses less digits than its factorization.

57089978567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21489288.

The product of its (nonzero) digits is 266716800, while the sum is 71.

The spelling of 57089978567 in words is "fifty-seven billion, eighty-nine million, nine hundred seventy-eight thousand, five hundred sixty-seven".