55778337503131 has 4 divisors (see below), whose sum is σ = 58714039477000. Its totient is φ = 52842635529264.

The previous prime is 55778337503081. The next prime is 55778337503143. The reversal of 55778337503131 is 13130573387755.

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 55778337503131 - 2⁷ = 55778337503003 is a prime.

It is a super-2 number, since 2×55778337503131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55778337503431) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1467850986906 + ... + 1467850986943.

It is an arithmetic number, because the mean of its divisors is an integer number (14678509869250).

Almost surely, 2^{55778337503131} is an apocalyptic number.

55778337503131 is a deficient number, since it is larger than the sum of its proper divisors (2935701973869).

55778337503131 is a wasteful number, since it uses less digits than its factorization.

55778337503131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935701973868.

The product of its (nonzero) digits is 27783000, while the sum is 58.

The spelling of 55778337503131 in words is "fifty-five trillion, seven hundred seventy-eight billion, three hundred thirty-seven million, five hundred three thousand, one hundred thirty-one".