55931953858 has 16 divisors (see below), whose sum is σ = 92814102720. Its totient is φ = 25065535600.

The previous prime is 55931953853. The next prime is 55931953919. The reversal of 55931953858 is 85835913955.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55931953796 and 55931953805.

It is not an unprimeable number, because it can be changed into a prime (55931953853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17902393 + ... + 17905516.

It is an arithmetic number, because the mean of its divisors is an integer number (5800881420).

Almost surely, 2^55931953858 is an apocalyptic number.

55931953858 is a deficient number, since it is larger than the sum of its proper divisors (36882148862).

55931953858 is a wasteful number, since it uses less digits than its factorization.

55931953858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35807993.

The product of its digits is 29160000, while the sum is 61.

The spelling of 55931953858 in words is "fifty-five billion, nine hundred thirty-one million, nine hundred fifty-three thousand, eight hundred fifty-eight".