97640571093 has 16 divisors (see below), whose sum is σ = 140209438656. Its totient is φ = 60083251200.

The previous prime is 97640571079. The next prime is 97640571097. The reversal of 97640571093 is 39017504679.

It is not a de Polignac number, because 97640571093 - 2⁶ = 97640571029 is a prime.

It is a super-2 number, since 2×97640571093² (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 (97640571097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 803221 + ... + 916757.

It is an arithmetic number, because the mean of its divisors is an integer number (8763089916).

Almost surely, 2^97640571093 is an apocalyptic number.

It is an amenable number.

97640571093 is a deficient number, since it is larger than the sum of its proper divisors (42568867563).

97640571093 is a wasteful number, since it uses less digits than its factorization.

97640571093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135604.

The product of its (nonzero) digits is 1428840, while the sum is 51.

The spelling of 97640571093 in words is "ninety-seven billion, six hundred forty million, five hundred seventy-one thousand, ninety-three".