83915770097 has 4 divisors (see below), whose sum is σ = 83928943860. Its totient is φ = 83902596336.

The previous prime is 83915770093. The next prime is 83915770129. The reversal of 83915770097 is 79007751938.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79007751938 = 2 ⋅39503875969.

It can be written as a sum of positive squares in 2 ways, for example, as 57304699456 + 26611070641 = 239384^2 + 163129^2 .

It is a cyclic number.

It is not a de Polignac number, because 83915770097 - 2² = 83915770093 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83915770093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6577322 + ... + 6590067.

It is an arithmetic number, because the mean of its divisors is an integer number (20982235965).

Almost surely, 2^83915770097 is an apocalyptic number.

It is an amenable number.

83915770097 is a deficient number, since it is larger than the sum of its proper divisors (13173763).

83915770097 is a wasteful number, since it uses less digits than its factorization.

83915770097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13173762.

The product of its (nonzero) digits is 3333960, while the sum is 56.

The spelling of 83915770097 in words is "eighty-three billion, nine hundred fifteen million, seven hundred seventy thousand, ninety-seven".