20620178374 has 24 divisors (see below), whose sum is σ = 32755986360. Its totient is φ = 9708466176.

The previous prime is 20620178311. The next prime is 20620178377. The reversal of 20620178374 is 47387102602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20620178377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1050054 + ... + 1069510.

It is an arithmetic number, because the mean of its divisors is an integer number (1364832765).

Almost surely, 2^20620178374 is an apocalyptic number.

20620178374 is a deficient number, since it is larger than the sum of its proper divisors (12135807986).

20620178374 is a wasteful number, since it uses less digits than its factorization.

20620178374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19812 (or 19645 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 20620178374 in words is "twenty billion, six hundred twenty million, one hundred seventy-eight thousand, three hundred seventy-four".