20719392855 has 64 divisors (see below), whose sum is σ = 40149043200. Its totient is φ = 8907116544.

The previous prime is 20719392839. The next prime is 20719392877. The reversal of 20719392855 is 55829391702.

It is not a de Polignac number, because 20719392855 - 2⁴ = 20719392839 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 20719392798 and 20719392807.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 2493067 + ... + 2501363.

It is an arithmetic number, because the mean of its divisors is an integer number (627328800).

Almost surely, 2^20719392855 is an apocalyptic number.

20719392855 is a deficient number, since it is larger than the sum of its proper divisors (19429650345).

20719392855 is a wasteful number, since it uses less digits than its factorization.

20719392855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9728.

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 20719392855 in words is "twenty billion, seven hundred nineteen million, three hundred ninety-two thousand, eight hundred fifty-five".