55400431135432 has 64 divisors (see below), whose sum is σ = 104218107840000. Its totient is φ = 27609136644096.

The previous prime is 55400431135421. The next prime is 55400431135519. The reversal of 55400431135432 is 23453113400455.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7972428694 + ... + 7972435642.

It is an arithmetic number, because the mean of its divisors is an integer number (1628407935000).

Almost surely, 2^{55400431135432} is an apocalyptic number.

It is an amenable number.

55400431135432 is a deficient number, since it is larger than the sum of its proper divisors (48817676704568).

55400431135432 is a wasteful number, since it uses less digits than its factorization.

55400431135432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10118 (or 10114 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 40.

Adding to 55400431135432 its reverse (23453113400455), we get a palindrome (78853544535887).

The spelling of 55400431135432 in words is "fifty-five trillion, four hundred billion, four hundred thirty-one million, one hundred thirty-five thousand, four hundred thirty-two".