20577092397 has 8 divisors (see below), whose sum is σ = 28880129760. Its totient is φ = 12996058320.

The previous prime is 20577092377. The next prime is 20577092441. The reversal of 20577092397 is 79329077502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20577092397 - 2⁷ = 20577092269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20577092377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180500754 + ... + 180500867.

It is an arithmetic number, because the mean of its divisors is an integer number (3610016220).

Almost surely, 2^20577092397 is an apocalyptic number.

It is an amenable number.

20577092397 is a deficient number, since it is larger than the sum of its proper divisors (8303037363).

20577092397 is a wasteful number, since it uses less digits than its factorization.

20577092397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361001643.

The product of its (nonzero) digits is 1666980, while the sum is 51.

The spelling of 20577092397 in words is "twenty billion, five hundred seventy-seven million, ninety-two thousand, three hundred ninety-seven".