20996303515 has 32 divisors (see below), whose sum is σ = 27677583360. Its totient is φ = 15163891200.

The previous prime is 20996303491. The next prime is 20996303591. The reversal of 20996303515 is 51530369902.

It is not a de Polignac number, because 20996303515 - 2⁷ = 20996303387 is a prime.

It is a super-3 number, since 3×20996303515³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 13398262 + ... + 13399828.

It is an arithmetic number, because the mean of its divisors is an integer number (864924480).

Almost surely, 2^20996303515 is an apocalyptic number.

20996303515 is a deficient number, since it is larger than the sum of its proper divisors (6681279845).

20996303515 is a wasteful number, since it uses less digits than its factorization.

20996303515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3123.

The product of its (nonzero) digits is 218700, while the sum is 43.

The spelling of 20996303515 in words is "twenty billion, nine hundred ninety-six million, three hundred three thousand, five hundred fifteen".