20390926315 has 8 divisors (see below), whose sum is σ = 24469879968. Its totient is φ = 16312228800.

The previous prime is 20390926243. The next prime is 20390926333. The reversal of 20390926315 is 51362909302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20390926315 - 2²⁵ = 20357371883 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 262399 + ... + 331111.

It is an arithmetic number, because the mean of its divisors is an integer number (3058734996).

Almost surely, 2^20390926315 is an apocalyptic number.

20390926315 is a deficient number, since it is larger than the sum of its proper divisors (4078953653).

20390926315 is an equidigital number, since it uses as much as digits as its factorization.

20390926315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128069.

The product of its (nonzero) digits is 87480, while the sum is 40.

The spelling of 20390926315 in words is "twenty billion, three hundred ninety million, nine hundred twenty-six thousand, three hundred fifteen".