123551432001 has 24 divisors (see below), whose sum is σ = 189586916064. Its totient is φ = 80358648480.

The previous prime is 123551431961. The next prime is 123551432029. The reversal of 123551432001 is 100234155321.

123551432001 is a `hidden beast` number, since 123 + 5 + 514 + 3 + 20 + 0 + 1 = 666.

It is not a de Polignac number, because 123551432001 - 2⁷ = 123551431873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (123551432801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6190551 + ... + 6210476.

It is an arithmetic number, because the mean of its divisors is an integer number (7899454836).

Almost surely, 2^123551432001 is an apocalyptic number.

It is an amenable number.

123551432001 is a deficient number, since it is larger than the sum of its proper divisors (66035484063).

123551432001 is an equidigital number, since it uses as much as digits as its factorization.

123551432001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12401083 (or 12401071 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 123551432001 its reverse (100234155321), we get a palindrome (223785587322).

The spelling of 123551432001 in words is "one hundred twenty-three billion, five hundred fifty-one million, four hundred thirty-two thousand, one".