98040971577 has 4 divisors (see below), whose sum is σ = 130721295440. Its totient is φ = 65360647716.

The previous prime is 98040971573. The next prime is 98040971629. The reversal of 98040971577 is 77517904089.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 98040971577 - 2² = 98040971573 is a prime.

It is a super-2 number, since 2×98040971577² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98040971573) 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, 16340161927 + ... + 16340161932.

It is an arithmetic number, because the mean of its divisors is an integer number (32680323860).

Almost surely, 2^98040971577 is an apocalyptic number.

It is an amenable number.

98040971577 is a deficient number, since it is larger than the sum of its proper divisors (32680323863).

98040971577 is a wasteful number, since it uses less digits than its factorization.

98040971577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32680323862.

The product of its (nonzero) digits is 4445280, while the sum is 57.

The spelling of 98040971577 in words is "ninety-eight billion, forty million, nine hundred seventy-one thousand, five hundred seventy-seven".