20290926719 has 16 divisors (see below), whose sum is σ = 23546096640. Its totient is φ = 17126834400.

The previous prime is 20290926679. The next prime is 20290926727. The reversal of 20290926719 is 91762909202.

It is a cyclic number.

It is not a de Polignac number, because 20290926719 - 2⁸ = 20290926463 is a prime.

It is a super-2 number, since 2×20290926719² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20290926739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42794 + ... + 205944.

It is an arithmetic number, because the mean of its divisors is an integer number (1471631040).

Almost surely, 2^20290926719 is an apocalyptic number.

20290926719 is a deficient number, since it is larger than the sum of its proper divisors (3255169921).

20290926719 is a wasteful number, since it uses less digits than its factorization.

20290926719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163430.

The product of its (nonzero) digits is 244944, while the sum is 47.

The spelling of 20290926719 in words is "twenty billion, two hundred ninety million, nine hundred twenty-six thousand, seven hundred nineteen".