87274112639 has 16 divisors (see below), whose sum is σ = 100962650880. Its totient is φ = 73891118400.

The previous prime is 87274112633. The next prime is 87274112647. The reversal of 87274112639 is 93621147278.

It is a cyclic number.

It is not a de Polignac number, because 87274112639 - 2¹² = 87274108543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87274112633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4067339 + ... + 4088739.

It is an arithmetic number, because the mean of its divisors is an integer number (6310165680).

Almost surely, 2^87274112639 is an apocalyptic number.

87274112639 is a deficient number, since it is larger than the sum of its proper divisors (13688538241).

87274112639 is a wasteful number, since it uses less digits than its factorization.

87274112639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28510.

The product of its digits is 1016064, while the sum is 50.

The spelling of 87274112639 in words is "eighty-seven billion, two hundred seventy-four million, one hundred twelve thousand, six hundred thirty-nine".