55631377540 has 24 divisors (see below), whose sum is σ = 116830691712. Its totient is φ = 22251636960.

The previous prime is 55631377531. The next prime is 55631377591. The reversal of 55631377540 is 4577313655.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663877 + ... + 742963.

It is an arithmetic number, because the mean of its divisors is an integer number (4867945488).

Almost surely, 2^55631377540 is an apocalyptic number.

It is an amenable number.

55631377540 is an abundant number, since it is smaller than the sum of its proper divisors (61199314172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55631377540 is a wasteful number, since it uses less digits than its factorization.

55631377540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114267 (or 114265 counting only the distinct ones).

The product of its (nonzero) digits is 1323000, while the sum is 46.

The spelling of 55631377540 in words is "fifty-five billion, six hundred thirty-one million, three hundred seventy-seven thousand, five hundred forty".