20192792797 has 8 divisors (see below), whose sum is σ = 21407444856. Its totient is φ = 18981123072.

The previous prime is 20192792761. The next prime is 20192792801. The reversal of 20192792797 is 79729729102.

It can be written as a sum of positive squares in 4 ways, for example, as 1569823641 + 18622969156 = 39621^2 + 136466^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20192792797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20192792197) 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, 731628 + ... + 758725.

It is an arithmetic number, because the mean of its divisors is an integer number (2675930607).

Almost surely, 2^20192792797 is an apocalyptic number.

It is an amenable number.

20192792797 is a deficient number, since it is larger than the sum of its proper divisors (1214652059).

20192792797 is a wasteful number, since it uses less digits than its factorization.

20192792797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491167.

The product of its (nonzero) digits is 2000376, while the sum is 55.

The spelling of 20192792797 in words is "twenty billion, one hundred ninety-two million, seven hundred ninety-two thousand, seven hundred ninety-seven".