55779733797756 has 96 divisors (see below), whose sum is σ = 131918404887360. Its totient is φ = 18342601998336.

The previous prime is 55779733797721. The next prime is 55779733797883. The reversal of 55779733797756 is 65779733797755.

It is a super-2 number, since 2×55779733797756² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 862189746 + ... + 862254438.

It is an arithmetic number, because the mean of its divisors is an integer number (1374150050910).

Almost surely, 2^{55779733797756} is an apocalyptic number.

It is an amenable number.

55779733797756 is an abundant number, since it is smaller than the sum of its proper divisors (76138671089604).

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

55779733797756 is a wasteful number, since it uses less digits than its factorization.

55779733797756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67775 (or 67773 counting only the distinct ones).

The product of its digits is 64324590750, while the sum is 87.

Subtracting 55779733797756 from its reverse (65779733797755), we obtain a palindrome (9999999999999).

The spelling of 55779733797756 in words is "fifty-five trillion, seven hundred seventy-nine billion, seven hundred thirty-three million, seven hundred ninety-seven thousand, seven hundred fifty-six".