97531922691072 has 132 divisors (see below), whose sum is σ = 291332390652420. Its totient is φ = 31389584228352.

The previous prime is 97531922691059. The next prime is 97531922691113. The reversal of 97531922691072 is 27019622913579.

97531922691072 is a `hidden beast` number, since 9 + 7 + 5 + 319 + 226 + 91 + 0 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 79753758806016 + 17778163885056 = 8930496^2 + 4216416^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182196373 + ... + 182730900.

Almost surely, 2^{97531922691072} is an apocalyptic number.

It is an amenable number.

97531922691072 is an abundant number, since it is smaller than the sum of its proper divisors (193800467961348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97531922691072 is a wasteful number, since it uses less digits than its factorization.

97531922691072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364927328 (or 364927307 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 63.

The spelling of 97531922691072 in words is "ninety-seven trillion, five hundred thirty-one billion, nine hundred twenty-two million, six hundred ninety-one thousand, seventy-two".