139887356427 has 32 divisors (see below), whose sum is σ = 255065269760. Its totient is φ = 73786736160.

The previous prime is 139887356419. The next prime is 139887356429. The reversal of 139887356427 is 724653788931.

139887356427 is a `hidden beast` number, since 1 + 3 + 98 + 8 + 73 + 56 + 427 = 666.

It is not a de Polignac number, because 139887356427 - 2³ = 139887356419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (139887356429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28464649 + ... + 28469562.

It is an arithmetic number, because the mean of its divisors is an integer number (7970789680).

Almost surely, 2^139887356427 is an apocalyptic number.

139887356427 is a deficient number, since it is larger than the sum of its proper divisors (115177913333).

139887356427 is a wasteful number, since it uses less digits than its factorization.

139887356427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56934240 (or 56934234 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 63.

The spelling of 139887356427 in words is "one hundred thirty-nine billion, eight hundred eighty-seven million, three hundred fifty-six thousand, four hundred twenty-seven".