55776377513868 has 24 divisors (see below), whose sum is σ = 141976233672000. Its totient is φ = 16901932579920.

The previous prime is 55776377513867. The next prime is 55776377513939. The reversal of 55776377513868 is 86831577367755.

It is a happy number.

It is a super-2 number, since 2×55776377513868² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55776377513793 and 55776377513802.

It is not an unprimeable number, because it can be changed into a prime (55776377513867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211274157118 + ... + 211274157381.

It is an arithmetic number, because the mean of its divisors is an integer number (5915676403000).

Almost surely, 2^{55776377513868} is an apocalyptic number.

It is an amenable number.

55776377513868 is an abundant number, since it is smaller than the sum of its proper divisors (86199856158132).

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

55776377513868 is a wasteful number, since it uses less digits than its factorization.

55776377513868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422548314517 (or 422548314515 counting only the distinct ones).

The product of its digits is 6223392000, while the sum is 78.

The spelling of 55776377513868 in words is "fifty-five trillion, seven hundred seventy-six billion, three hundred seventy-seven million, five hundred thirteen thousand, eight hundred sixty-eight".