20326792192561 has 8 divisors (see below), whose sum is σ = 21027777523200. Its totient is φ = 19625810959440.

The previous prime is 20326792192559. The next prime is 20326792192661. The reversal of 20326792192561 is 16529129762302.

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

It is a cyclic number.

It is not a de Polignac number, because 20326792192561 - 2¹ = 20326792192559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20326792192061) 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, 11781910 + ... + 13396528.

It is an arithmetic number, because the mean of its divisors is an integer number (2628472190400).

Almost surely, 2^{20326792192561} is an apocalyptic number.

It is an amenable number.

20326792192561 is a deficient number, since it is larger than the sum of its proper divisors (700985330639).

20326792192561 is a wasteful number, since it uses less digits than its factorization.

20326792192561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048759.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 20326792192561 in words is "twenty trillion, three hundred twenty-six billion, seven hundred ninety-two million, one hundred ninety-two thousand, five hundred sixty-one".