20079297790672 has 20 divisors (see below), whose sum is σ = 38905308372996. Its totient is φ = 10039218210560.

The previous prime is 20079297790661. The next prime is 20079297790697. The reversal of 20079297790672 is 27609779297002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5950750421056 + 14128547369616 = 2439416^2 + 3758796^2 .

It is a super-3 number, since 3×20079297790672³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20079297790598 and 20079297790607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26533003 + ... + 27279274.

Almost surely, 2^{20079297790672} is an apocalyptic number.

It is an amenable number.

20079297790672 is a deficient number, since it is larger than the sum of its proper divisors (18826010582324).

20079297790672 is a wasteful number, since it uses less digits than its factorization.

20079297790672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53835606 (or 53835600 counting only the distinct ones).

The product of its (nonzero) digits is 84015792, while the sum is 67.

The spelling of 20079297790672 in words is "twenty trillion, seventy-nine billion, two hundred ninety-seven million, seven hundred ninety thousand, six hundred seventy-two".