87570616161 has 16 divisors (see below), whose sum is σ = 133463199744. Its totient is φ = 50032004304.

The previous prime is 87570616157. The next prime is 87570616229. The reversal of 87570616161 is 16161607578.

It is not a de Polignac number, because 87570616161 - 2² = 87570616157 is a prime.

It is a super-2 number, since 2×87570616161² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87570616161.

It is not an unprimeable number, because it can be changed into a prime (87570616141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217815 + ... + 471788.

It is an arithmetic number, because the mean of its divisors is an integer number (8341449984).

Almost surely, 2^87570616161 is an apocalyptic number.

It is an amenable number.

87570616161 is a deficient number, since it is larger than the sum of its proper divisors (45892583583).

87570616161 is a wasteful number, since it uses less digits than its factorization.

87570616161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695660.

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 87570616161 in words is "eighty-seven billion, five hundred seventy million, six hundred sixteen thousand, one hundred sixty-one".