87717842961 has 32 divisors (see below), whose sum is σ = 134967595008. Its totient is φ = 49636903680.

The previous prime is 87717842909. The next prime is 87717842983. The reversal of 87717842961 is 16924871778.

It is not a de Polignac number, because 87717842961 - 2¹⁸ = 87717580817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87717842895 and 87717842904.

It is not an unprimeable number, because it can be changed into a prime (87717846961) 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, 2763000 + ... + 2794566.

It is an arithmetic number, because the mean of its divisors is an integer number (4217737344).

Almost surely, 2^87717842961 is an apocalyptic number.

It is an amenable number.

87717842961 is a deficient number, since it is larger than the sum of its proper divisors (47249752047).

87717842961 is a wasteful number, since it uses less digits than its factorization.

87717842961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32861.

The product of its digits is 9483264, while the sum is 60.

The spelling of 87717842961 in words is "eighty-seven billion, seven hundred seventeen million, eight hundred forty-two thousand, nine hundred sixty-one".