55656806377 has 2 divisors, whose sum is σ = 55656806378. Its totient is φ = 55656806376.

The previous prime is 55656806353. The next prime is 55656806411. The reversal of 55656806377 is 77360865655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46855364521 + 8801441856 = 216461^2 + 93816^2 .

It is a cyclic number.

It is not a de Polignac number, because 55656806377 - 2³¹ = 53509322729 is a prime.

It is a super-2 number, since 2×55656806377² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55656206377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27828403188 + 27828403189.

It is an arithmetic number, because the mean of its divisors is an integer number (27828403189).

Almost surely, 2^55656806377 is an apocalyptic number.

It is an amenable number.

55656806377 is a deficient number, since it is larger than the sum of its proper divisors (1).

55656806377 is an equidigital number, since it uses as much as digits as its factorization.

55656806377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752000, while the sum is 58.

The spelling of 55656806377 in words is "fifty-five billion, six hundred fifty-six million, eight hundred six thousand, three hundred seventy-seven".