97777105321 has 32 divisors (see below), whose sum is σ = 116594150400. Its totient is φ = 81925579008.

The previous prime is 97777105271. The next prime is 97777105331. The reversal of 97777105321 is 12350177779.

It is not a de Polignac number, because 97777105321 - 2²⁵ = 97743550889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (97777105331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15102141 + ... + 15108613.

It is an arithmetic number, because the mean of its divisors is an integer number (3643567200).

Almost surely, 2^97777105321 is an apocalyptic number.

It is an amenable number.

97777105321 is a deficient number, since it is larger than the sum of its proper divisors (18817045079).

97777105321 is an equidigital number, since it uses as much as digits as its factorization.

97777105321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7478 (or 7464 counting only the distinct ones).

The product of its (nonzero) digits is 648270, while the sum is 49.

The spelling of 97777105321 in words is "ninety-seven billion, seven hundred seventy-seven million, one hundred five thousand, three hundred twenty-one".