97122424581 has 96 divisors (see below), whose sum is σ = 177196481280. Its totient is φ = 49898115072.

The previous prime is 97122424571. The next prime is 97122424601. The reversal of 97122424581 is 18542422179.

97122424581 is a `hidden beast` number, since 9 + 7 + 1 + 22 + 42 + 4 + 581 = 666.

It is not a de Polignac number, because 97122424581 - 2⁶ = 97122424517 is a prime.

It is a super-2 number, since 2×97122424581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97122424571) 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 95 ways as a sum of consecutive naturals, for example, 6025525 + ... + 6041621.

It is an arithmetic number, because the mean of its divisors is an integer number (1845796680).

Almost surely, 2^97122424581 is an apocalyptic number.

97122424581 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

97122424581 is a deficient number, since it is larger than the sum of its proper divisors (80074056699).

97122424581 is a wasteful number, since it uses less digits than its factorization.

97122424581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16315 (or 16312 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The spelling of 97122424581 in words is "ninety-seven billion, one hundred twenty-two million, four hundred twenty-four thousand, five hundred eighty-one".