97621013522 has 6 divisors (see below), whose sum is σ = 146432183079. Its totient is φ = 48810285830.

The previous prime is 97621013519. The next prime is 97621013557. The reversal of 97621013522 is 22531012679.

It can be written as a sum of positive squares in only one way, i.e., 48810506761 + 48810506761 = 220931^2 + 220931^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=220931.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 331397 + ... + 552327.

Almost surely, 2^97621013522 is an apocalyptic number.

97621013522 is a deficient number, since it is larger than the sum of its proper divisors (48811169557).

97621013522 is an frugal number, since it uses more digits than its factorization.

97621013522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441864 (or 220933 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 97621013522 in words is "ninety-seven billion, six hundred twenty-one million, thirteen thousand, five hundred twenty-two".