123554262455401 has 2 divisors, whose sum is σ = 123554262455402. Its totient is φ = 123554262455400.

The previous prime is 123554262455297. The next prime is 123554262455431. The reversal of 123554262455401 is 104554262455321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77308495875625 + 46245766579776 = 8792525^2 + 6800424^2 .

It is a cyclic number.

It is not a de Polignac number, because 123554262455401 - 2³⁷ = 123416823501929 is a prime.

It is a super-2 number, since 2×123554262455401² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123554262455431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61777131227700 + 61777131227701.

It is an arithmetic number, because the mean of its divisors is an integer number (61777131227701).

Almost surely, 2^{123554262455401} is an apocalyptic number.

It is an amenable number.

123554262455401 is a deficient number, since it is larger than the sum of its proper divisors (1).

123554262455401 is an equidigital number, since it uses as much as digits as its factorization.

123554262455401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760000, while the sum is 49.

The spelling of 123554262455401 in words is "one hundred twenty-three trillion, five hundred fifty-four billion, two hundred sixty-two million, four hundred fifty-five thousand, four hundred one".