97621013523 has 16 divisors (see below), whose sum is σ = 142020185472. Its totient is φ = 59153424000.

The previous prime is 97621013519. The next prime is 97621013557. The reversal of 97621013523 is 32531012679.

It is a happy number.

It is not a de Polignac number, because 97621013523 - 2² = 97621013519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97621013513) 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, 85713 + ... + 450098.

It is an arithmetic number, because the mean of its divisors is an integer number (8876261592).

Almost surely, 2^97621013523 is an apocalyptic number.

97621013523 is a deficient number, since it is larger than the sum of its proper divisors (44399171949).

97621013523 is a wasteful number, since it uses less digits than its factorization.

97621013523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541346.

The product of its (nonzero) digits is 68040, while the sum is 39.

The spelling of 97621013523 in words is "ninety-seven billion, six hundred twenty-one million, thirteen thousand, five hundred twenty-three".