97787164456 has 8 divisors (see below), whose sum is σ = 183350933370. Its totient is φ = 48893582224.

The previous prime is 97787164411. The next prime is 97787164459. The reversal of 97787164456 is 65446178779.

It can be written as a sum of positive squares in only one way, i.e., 94907124900 + 2880039556 = 308070^2 + 53666^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (97787164459) 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 as a sum of consecutive naturals, namely, 6111697771 + ... + 6111697786.

Almost surely, 2^97787164456 is an apocalyptic number.

It is an amenable number.

97787164456 is a deficient number, since it is larger than the sum of its proper divisors (85563768914).

97787164456 is a wasteful number, since it uses less digits than its factorization.

97787164456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12223395563 (or 12223395559 counting only the distinct ones).

The product of its digits is 71124480, while the sum is 64.

The spelling of 97787164456 in words is "ninety-seven billion, seven hundred eighty-seven million, one hundred sixty-four thousand, four hundred fifty-six".