20251415513 has 4 divisors (see below), whose sum is σ = 23144474880. Its totient is φ = 17358356148.

The previous prime is 20251415491. The next prime is 20251415573. The reversal of 20251415513 is 31551415202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20251415513 - 2¹⁰ = 20251414489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20251415573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1446529673 + ... + 1446529686.

It is an arithmetic number, because the mean of its divisors is an integer number (5786118720).

Almost surely, 2^20251415513 is an apocalyptic number.

It is an amenable number.

20251415513 is a deficient number, since it is larger than the sum of its proper divisors (2893059367).

20251415513 is an equidigital number, since it uses as much as digits as its factorization.

20251415513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893059366.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 20251415513 in words is "twenty billion, two hundred fifty-one million, four hundred fifteen thousand, five hundred thirteen".