12431643554 has 32 divisors (see below), whose sum is σ = 20621018880. Its totient is φ = 5573654800.

The previous prime is 12431643547. The next prime is 12431643563. The reversal of 12431643554 is 45534613421.

It is a super-2 number, since 2×12431643554² (a number of 21 digits) contains 22 as substring.

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, 1198169 + ... + 1208499.

It is an arithmetic number, because the mean of its divisors is an integer number (644406840).

Almost surely, 2^12431643554 is an apocalyptic number.

12431643554 is a deficient number, since it is larger than the sum of its proper divisors (8189375326).

12431643554 is a wasteful number, since it uses less digits than its factorization.

12431643554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11086.

The product of its digits is 172800, while the sum is 38.

The spelling of 12431643554 in words is "twelve billion, four hundred thirty-one million, six hundred forty-three thousand, five hundred fifty-four".