123455511054400 has 126 divisors (see below), whose sum is σ = 353374079053578. Its totient is φ = 42327603763200.

The previous prime is 123455511054371. The next prime is 123455511054413. The reversal of 123455511054400 is 4450115554321.

It can be written as a sum of positive squares in 3 ways, for example, as 7214510048256 + 116241001006144 = 2685984^2 + 10781512^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 787265421 + ... + 787422220.

Almost surely, 2^{123455511054400} is an apocalyptic number.

123455511054400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123455511054400 is an abundant number, since it is smaller than the sum of its proper divisors (229918567999178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123455511054400 is a wasteful number, since it uses less digits than its factorization.

123455511054400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574687677 (or 1574687655 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 40.

The spelling of 123455511054400 in words is "one hundred twenty-three trillion, four hundred fifty-five billion, five hundred eleven million, fifty-four thousand, four hundred".