55677778390 has 24 divisors (see below), whose sum is σ = 108522253008. Its totient is φ = 20557948320.

The previous prime is 55677778319. The next prime is 55677778399. The reversal of 55677778390 is 9387777655.

It is a super-3 number, since 3×55677778390³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55677778399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16471026 + ... + 16474405.

It is an arithmetic number, because the mean of its divisors is an integer number (4521760542).

Almost surely, 2^55677778390 is an apocalyptic number.

55677778390 is a deficient number, since it is larger than the sum of its proper divisors (52844474618).

55677778390 is a wasteful number, since it uses less digits than its factorization.

55677778390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32945464 (or 32945451 counting only the distinct ones).

The product of its (nonzero) digits is 77792400, while the sum is 64.

The spelling of 55677778390 in words is "fifty-five billion, six hundred seventy-seven million, seven hundred seventy-eight thousand, three hundred ninety".