87717220475 has 12 divisors (see below), whose sum is σ = 108774288000. Its totient is φ = 70170592800.

The previous prime is 87717220463. The next prime is 87717220519. The reversal of 87717220475 is 57402271778.

It is a happy number.

It is not a de Polignac number, because 87717220475 - 2⁶ = 87717220411 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 594401 + ... + 727149.

It is an arithmetic number, because the mean of its divisors is an integer number (9064524000).

Almost surely, 2^87717220475 is an apocalyptic number.

87717220475 is a deficient number, since it is larger than the sum of its proper divisors (21057067525).

87717220475 is a wasteful number, since it uses less digits than its factorization.

87717220475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159190 (or 159185 counting only the distinct ones).

The product of its (nonzero) digits is 1536640, while the sum is 50.

The spelling of 87717220475 in words is "eighty-seven billion, seven hundred seventeen million, two hundred twenty thousand, four hundred seventy-five".