20570240515 has 8 divisors (see below), whose sum is σ = 26928314928. Its totient is φ = 14960174880.

The previous prime is 20570240459. The next prime is 20570240563. The reversal of 20570240515 is 51504207502.

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

It is not a de Polignac number, because 20570240515 - 2²³ = 20561851907 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187002132 + ... + 187002241.

It is an arithmetic number, because the mean of its divisors is an integer number (3366039366).

Almost surely, 2^20570240515 is an apocalyptic number.

20570240515 is a deficient number, since it is larger than the sum of its proper divisors (6358074413).

20570240515 is a wasteful number, since it uses less digits than its factorization.

20570240515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374004389.

The product of its (nonzero) digits is 14000, while the sum is 31.

The spelling of 20570240515 in words is "twenty billion, five hundred seventy million, two hundred forty thousand, five hundred fifteen".