97912121161575 has 96 divisors (see below), whose sum is σ = 190404062931456. Its totient is φ = 43466188469760.

The previous prime is 97912121161499. The next prime is 97912121161643. The reversal of 97912121161575 is 57516112121979.

It is not a de Polignac number, because 97912121161575 - 2⁸ = 97912121161319 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8629764 + ... + 16440713.

It is an arithmetic number, because the mean of its divisors is an integer number (1983375655536).

Almost surely, 2^{97912121161575} is an apocalyptic number.

97912121161575 is a deficient number, since it is larger than the sum of its proper divisors (92491941769881).

97912121161575 is a wasteful number, since it uses less digits than its factorization.

97912121161575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25070713 (or 25070708 counting only the distinct ones).

The product of its digits is 2381400, while the sum is 57.

The spelling of 97912121161575 in words is "ninety-seven trillion, nine hundred twelve billion, one hundred twenty-one million, one hundred sixty-one thousand, five hundred seventy-five".