87785207017124 has 6 divisors (see below), whose sum is σ = 153624112279974. Its totient is φ = 43892603508560.

The previous prime is 87785207017099. The next prime is 87785207017139. The reversal of 87785207017124 is 42171070258778.

It can be written as a sum of positive squares in only one way, i.e., 85975213487524 + 1809993529600 = 9272282^2 + 1345360^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10973150877137 + ... + 10973150877144.

It is an arithmetic number, because the mean of its divisors is an integer number (25604018713329).

Almost surely, 2^{87785207017124} is an apocalyptic number.

It is an amenable number.

87785207017124 is a deficient number, since it is larger than the sum of its proper divisors (65838905262850).

87785207017124 is a wasteful number, since it uses less digits than its factorization.

87785207017124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21946301754285 (or 21946301754283 counting only the distinct ones).

The product of its (nonzero) digits is 12293120, while the sum is 59.

The spelling of 87785207017124 in words is "eighty-seven trillion, seven hundred eighty-five billion, two hundred seven million, seventeen thousand, one hundred twenty-four".