123415552432 has 20 divisors (see below), whose sum is σ = 249514052400. Its totient is φ = 59024829248.

The previous prime is 123415552417. The next prime is 123415552433. The reversal of 123415552432 is 234255514321.

It is a happy number.

It is a super-2 number, since 2×123415552432² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123415552391 and 123415552400.

It is not an unprimeable number, because it can be changed into a prime (123415552433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167683807 + ... + 167684542.

It is an arithmetic number, because the mean of its divisors is an integer number (12475702620).

Almost surely, 2^123415552432 is an apocalyptic number.

It is an amenable number.

123415552432 is an abundant number, since it is smaller than the sum of its proper divisors (126098499968).

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

123415552432 is a wasteful number, since it uses less digits than its factorization.

123415552432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335368380 (or 335368374 counting only the distinct ones).

The product of its digits is 144000, while the sum is 37.

The spelling of 123415552432 in words is "one hundred twenty-three billion, four hundred fifteen million, five hundred fifty-two thousand, four hundred thirty-two".