155456718401 has 2 divisors, whose sum is σ = 155456718402. Its totient is φ = 155456718400.

The previous prime is 155456718383. The next prime is 155456718407. The reversal of 155456718401 is 104817654551.

It is a Cunningham number, because it is equal to 394280²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155456718400 + 1 = 394280^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 155456718401 - 2²⁶ = 155389609537 is a prime.

It is not a weakly prime, because it can be changed into another prime (155456718407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77728359200 + 77728359201.

It is an arithmetic number, because the mean of its divisors is an integer number (77728359201).

Almost surely, 2^155456718401 is an apocalyptic number.

It is an amenable number.

155456718401 is a deficient number, since it is larger than the sum of its proper divisors (1).

155456718401 is an equidigital number, since it uses as much as digits as its factorization.

155456718401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672000, while the sum is 47.

The spelling of 155456718401 in words is "one hundred fifty-five billion, four hundred fifty-six million, seven hundred eighteen thousand, four hundred one".