55919914085129 has 2 divisors, whose sum is σ = 55919914085130. Its totient is φ = 55919914085128.

The previous prime is 55919914085117. The next prime is 55919914085201. The reversal of 55919914085129 is 92158041991955.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35803792075129 + 20116122010000 = 5983627^2 + 4485100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55919914085129 is a prime.

It is not a weakly prime, because it can be changed into another prime (55919914015129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27959957042564 + 27959957042565.

It is an arithmetic number, because the mean of its divisors is an integer number (27959957042565).

Almost surely, 2^{55919914085129} is an apocalyptic number.

It is an amenable number.

55919914085129 is a deficient number, since it is larger than the sum of its proper divisors (1).

55919914085129 is an equidigital number, since it uses as much as digits as its factorization.

55919914085129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488000, while the sum is 68.

The spelling of 55919914085129 in words is "fifty-five trillion, nine hundred nineteen billion, nine hundred fourteen million, eighty-five thousand, one hundred twenty-nine".