20001513515 has 8 divisors (see below), whose sum is σ = 24004760208. Its totient is φ = 15999248160.

The previous prime is 20001513509. The next prime is 20001513547. The reversal of 20001513515 is 51531510002.

It is a happy number.

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

It is not a de Polignac number, because 20001513515 - 2¹² = 20001509419 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, 199721 + ... + 282650.

It is an arithmetic number, because the mean of its divisors is an integer number (3000595026).

Almost surely, 2^20001513515 is an apocalyptic number.

20001513515 is a deficient number, since it is larger than the sum of its proper divisors (4003246693).

20001513515 is an equidigital number, since it uses as much as digits as its factorization.

20001513515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490669.

The product of its (nonzero) digits is 750, while the sum is 23.

The spelling of 20001513515 in words is "twenty billion, one million, five hundred thirteen thousand, five hundred fifteen".