55555465988657 has 12 divisors (see below), whose sum is σ = 57020582526480. Its totient is φ = 54127110443040.

The previous prime is 55555465988647. The next prime is 55555465988713. The reversal of 55555465988657 is 75688956455555.

It is a de Polignac number, because none of the positive numbers 2^k-55555465988657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55555465988647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21118403 + ... + 23602920.

It is an arithmetic number, because the mean of its divisors is an integer number (4751715210540).

Almost surely, 2^{55555465988657} is an apocalyptic number.

It is an amenable number.

55555465988657 is a deficient number, since it is larger than the sum of its proper divisors (1465116537823).

55555465988657 is an equidigital number, since it uses as much as digits as its factorization.

55555465988657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44722144 (or 44722103 counting only the distinct ones).

The product of its digits is 45360000000, while the sum is 83.

The spelling of 55555465988657 in words is "fifty-five trillion, five hundred fifty-five billion, four hundred sixty-five million, nine hundred eighty-eight thousand, six hundred fifty-seven".