97657377375678 has 32 divisors (see below), whose sum is σ = 206809574038560. Its totient is φ = 30636761763840.

The previous prime is 97657377375647. The next prime is 97657377375689. The reversal of 97657377375678 is 87657377375679.

It is a junction number, because it is equal to n+sod(n) for n = 97657377375594 and 97657377375603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9518163 + ... + 16908878.

It is an arithmetic number, because the mean of its divisors is an integer number (6462799188705).

Almost surely, 2^{97657377375678} is an apocalyptic number.

97657377375678 is an abundant number, since it is smaller than the sum of its proper divisors (109152196662882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97657377375678 is a wasteful number, since it uses less digits than its factorization.

97657377375678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26463292.

The product of its digits is 68612896800, while the sum is 87.

Subtracting from 97657377375678 its reverse (87657377375679), we obtain a palindrome (9999999999999).

The spelling of 97657377375678 in words is "ninety-seven trillion, six hundred fifty-seven billion, three hundred seventy-seven million, three hundred seventy-five thousand, six hundred seventy-eight".