87137877572 has 6 divisors (see below), whose sum is σ = 152491285758. Its totient is φ = 43568938784.

The previous prime is 87137877559. The next prime is 87137877599. The reversal of 87137877572 is 27577873178.

It can be written as a sum of positive squares in only one way, i.e., 84526258756 + 2611618816 = 290734^2 + 51104^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10892234693 + ... + 10892234700.

It is an arithmetic number, because the mean of its divisors is an integer number (25415214293).

Almost surely, 2^87137877572 is an apocalyptic number.

It is an amenable number.

87137877572 is a deficient number, since it is larger than the sum of its proper divisors (65353408186).

87137877572 is a wasteful number, since it uses less digits than its factorization.

87137877572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21784469397 (or 21784469395 counting only the distinct ones).

The product of its digits is 32269440, while the sum is 62.

The spelling of 87137877572 in words is "eighty-seven billion, one hundred thirty-seven million, eight hundred seventy-seven thousand, five hundred seventy-two".