97157677771 has 16 divisors (see below), whose sum is σ = 124405482240. Its totient is φ = 73661136480.

The previous prime is 97157677769. The next prime is 97157677777. The reversal of 97157677771 is 17777675179.

It is a cyclic number.

It is not a de Polignac number, because 97157677771 - 2¹ = 97157677769 is a prime.

It is a super-2 number, since 2×97157677771² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97157677777) 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, 17048341 + ... + 17054038.

It is an arithmetic number, because the mean of its divisors is an integer number (7775342640).

Almost surely, 2^97157677771 is an apocalyptic number.

97157677771 is a deficient number, since it is larger than the sum of its proper divisors (27247804469).

97157677771 is a wasteful number, since it uses less digits than its factorization.

97157677771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34102434.

The product of its digits is 31765230, while the sum is 64.

The spelling of 97157677771 in words is "ninety-seven billion, one hundred fifty-seven million, six hundred seventy-seven thousand, seven hundred seventy-one".