20257460715 has 32 divisors (see below), whose sum is σ = 32609088000. Its totient is φ = 10738379520.

The previous prime is 20257460693. The next prime is 20257460723. The reversal of 20257460715 is 51706475202.

It is not a de Polignac number, because 20257460715 - 2¹⁵ = 20257427947 is a prime.

It is a super-2 number, since 2×20257460715² (a number of 21 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 3367060 + ... + 3373070.

It is an arithmetic number, because the mean of its divisors is an integer number (1019034000).

Almost surely, 2^20257460715 is an apocalyptic number.

20257460715 is a deficient number, since it is larger than the sum of its proper divisors (12351627285).

20257460715 is a wasteful number, since it uses less digits than its factorization.

20257460715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7347.

The product of its (nonzero) digits is 117600, while the sum is 39.

The spelling of 20257460715 in words is "twenty billion, two hundred fifty-seven million, four hundred sixty thousand, seven hundred fifteen".