97157677772 has 48 divisors (see below), whose sum is σ = 189953779680. Its totient is φ = 43211750400.

The previous prime is 97157677769. The next prime is 97157677777. The reversal of 97157677772 is 27777675179.

It is a super-2 number, since 2×97157677772² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 97157677699 and 97157677708.

It is not an unprimeable number, because it can be changed into a prime (97157677777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454622 + ... + 633242.

It is an arithmetic number, because the mean of its divisors is an integer number (3957370410).

Almost surely, 2^97157677772 is an apocalyptic number.

It is an amenable number.

97157677772 is a deficient number, since it is larger than the sum of its proper divisors (92796101908).

97157677772 is a wasteful number, since it uses less digits than its factorization.

97157677772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179082 (or 179080 counting only the distinct ones).

The product of its digits is 63530460, while the sum is 65.

The spelling of 97157677772 in words is "ninety-seven billion, one hundred fifty-seven million, six hundred seventy-seven thousand, seven hundred seventy-two".