55819137357 has 24 divisors (see below), whose sum is σ = 80813660928. Its totient is φ = 37127008800.

The previous prime is 55819137349. The next prime is 55819137379. The reversal of 55819137357 is 75373191855.

It is a happy number.

55819137357 is a `hidden beast` number, since 5 + 581 + 9 + 1 + 3 + 7 + 3 + 57 = 666.

It is not a de Polignac number, because 55819137357 - 2³ = 55819137349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55819137397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8228307 + ... + 8235087.

It is an arithmetic number, because the mean of its divisors is an integer number (3367235872).

Almost surely, 2^55819137357 is an apocalyptic number.

It is an amenable number.

55819137357 is a deficient number, since it is larger than the sum of its proper divisors (24994523571).

55819137357 is a wasteful number, since it uses less digits than its factorization.

55819137357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8761 (or 8758 counting only the distinct ones).

The product of its digits is 3969000, while the sum is 54.

The spelling of 55819137357 in words is "fifty-five billion, eight hundred nineteen million, one hundred thirty-seven thousand, three hundred fifty-seven".