88609909521 has 64 divisors (see below), whose sum is σ = 140031623168. Its totient is φ = 48800683008.

The previous prime is 88609909519. The next prime is 88609909541. The reversal of 88609909521 is 12590990688.

It is not a de Polignac number, because 88609909521 - 2¹ = 88609909519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88609909501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13040901 + ... + 13047693.

It is an arithmetic number, because the mean of its divisors is an integer number (2187994112).

Almost surely, 2^88609909521 is an apocalyptic number.

It is an amenable number.

88609909521 is a deficient number, since it is larger than the sum of its proper divisors (51421713647).

88609909521 is a wasteful number, since it uses less digits than its factorization.

88609909521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7070.

The product of its (nonzero) digits is 2799360, while the sum is 57.

The spelling of 88609909521 in words is "eighty-eight billion, six hundred nine million, nine hundred nine thousand, five hundred twenty-one".