88321670957521 has 9 divisors (see below), whose sum is σ = 92328929248521. Its totient is φ = 84481391552052.

The previous prime is 88321670957503. The next prime is 88321670957543. The reversal of 88321670957521 is 12575907612388.

The square root of 88321670957521 is 9397961.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 88321670957521 - 2³¹ = 88319523473873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88321670954521) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 215948800 + ... + 216357406.

Almost surely, 2^{88321670957521} is an apocalyptic number.

88321670957521 is the 9397961-st square number.

88321670957521 is the 4698981-st centered octagonal number.

It is an amenable number.

88321670957521 is a deficient number, since it is larger than the sum of its proper divisors (4007258291000).

88321670957521 is an frugal number, since it uses more digits than its factorization.

88321670957521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817260 (or 408630 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 64.

The spelling of 88321670957521 in words is "eighty-eight trillion, three hundred twenty-one billion, six hundred seventy million, nine hundred fifty-seven thousand, five hundred twenty-one".