20973075491179 has 8 divisors (see below), whose sum is σ = 23981340936960. Its totient is φ = 17967837996456.

The previous prime is 20973075491171. The next prime is 20973075491183. The reversal of 20973075491179 is 97119457037902.

It is a happy number.

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 20973075491179 - 2³ = 20973075491171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20973075491179.

It is not an unprimeable number, because it can be changed into a prime (20973075491171) 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, 756972919 + ... + 757000624.

It is an arithmetic number, because the mean of its divisors is an integer number (2997667617120).

Almost surely, 2^{20973075491179} is an apocalyptic number.

20973075491179 is a deficient number, since it is larger than the sum of its proper divisors (3008265445781).

20973075491179 is a wasteful number, since it uses less digits than its factorization.

20973075491179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513975529.

The product of its (nonzero) digits is 30005640, while the sum is 64.

The spelling of 20973075491179 in words is "twenty trillion, nine hundred seventy-three billion, seventy-five million, four hundred ninety-one thousand, one hundred seventy-nine".