97155610181 has 32 divisors (see below), whose sum is σ = 119759334912. Its totient is φ = 76921436160.

The previous prime is 97155610177. The next prime is 97155610217. The reversal of 97155610181 is 18101655179.

It is a cyclic number.

It is not a de Polignac number, because 97155610181 - 2² = 97155610177 is a prime.

It is a super-2 number, since 2×97155610181² (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 (97155610121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3302720 + ... + 3332006.

It is an arithmetic number, because the mean of its divisors is an integer number (3742479216).

Almost surely, 2^97155610181 is an apocalyptic number.

It is an amenable number.

97155610181 is a deficient number, since it is larger than the sum of its proper divisors (22603724731).

97155610181 is a wasteful number, since it uses less digits than its factorization.

97155610181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29829.

The product of its (nonzero) digits is 75600, while the sum is 44.

The spelling of 97155610181 in words is "ninety-seven billion, one hundred fifty-five million, six hundred ten thousand, one hundred eighty-one".