97810221875 has 12 divisors (see below), whose sum is σ = 122254956432. Its totient is φ = 78248175000.

The previous prime is 97810221827. The next prime is 97810221881. The reversal of 97810221875 is 57812201879.

It is not a de Polignac number, because 97810221875 - 2²⁰ = 97809173299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15646511 + ... + 15652760.

It is an arithmetic number, because the mean of its divisors is an integer number (10187913036).

Almost surely, 2^97810221875 is an apocalyptic number.

97810221875 is a deficient number, since it is larger than the sum of its proper divisors (24444734557).

97810221875 is an frugal number, since it uses more digits than its factorization.

97810221875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31299296 (or 31299276 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 50.

The spelling of 97810221875 in words is "ninety-seven billion, eight hundred ten million, two hundred twenty-one thousand, eight hundred seventy-five".