431139939616 has 12 divisors (see below), whose sum is σ = 848806756182. Its totient is φ = 215569969792.

The previous prime is 431139939583. The next prime is 431139939653. The reversal of 431139939616 is 616939931134.

It can be written as a sum of positive squares in only one way, i.e., 428495923216 + 2644016400 = 654596^2 + 51420^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6736561525 + ... + 6736561588.

Almost surely, 2^431139939616 is an apocalyptic number.

It is an amenable number.

431139939616 is a deficient number, since it is larger than the sum of its proper divisors (417666816566).

431139939616 is a wasteful number, since it uses less digits than its factorization.

431139939616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13473123123 (or 13473123115 counting only the distinct ones).

The product of its digits is 2834352, while the sum is 55.

The spelling of 431139939616 in words is "four hundred thirty-one billion, one hundred thirty-nine million, nine hundred thirty-nine thousand, six hundred sixteen".