97158764844 has 144 divisors (see below), whose sum is σ = 264345419520. Its totient is φ = 31166130240.

The previous prime is 97158764839. The next prime is 97158764887. The reversal of 97158764844 is 44846785179.

97158764844 is a `hidden beast` number, since 9 + 7 + 1 + 587 + 6 + 4 + 8 + 44 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8760927 + ... + 8772009.

It is an arithmetic number, because the mean of its divisors is an integer number (1835732080).

Almost surely, 2^97158764844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97158764844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132172709760).

97158764844 is an abundant number, since it is smaller than the sum of its proper divisors (167186654676).

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

97158764844 is a wasteful number, since it uses less digits than its factorization.

97158764844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11442 (or 11428 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 63.

The spelling of 97158764844 in words is "ninety-seven billion, one hundred fifty-eight million, seven hundred sixty-four thousand, eight hundred forty-four".