97157386181 has 8 divisors (see below), whose sum is σ = 99121838400. Its totient is φ = 95203524640.

The previous prime is 97157386153. The next prime is 97157386187. The reversal of 97157386181 is 18168375179.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97157386181 - 2¹⁸ = 97157124037 is a prime.

It is a super-2 number, since 2×97157386181² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97157386187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2629136 + ... + 2665833.

It is an arithmetic number, because the mean of its divisors is an integer number (12390229800).

Almost surely, 2^97157386181 is an apocalyptic number.

It is an amenable number.

97157386181 is a deficient number, since it is larger than the sum of its proper divisors (1964452219).

97157386181 is a wasteful number, since it uses less digits than its factorization.

97157386181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5295339.

The product of its digits is 2540160, while the sum is 56.

The spelling of 97157386181 in words is "ninety-seven billion, one hundred fifty-seven million, three hundred eighty-six thousand, one hundred eighty-one".