20412798513 has 8 divisors (see below), whose sum is σ = 27220380576. Its totient is φ = 13606874400.

The previous prime is 20412798493. The next prime is 20412798557. The reversal of 20412798513 is 31589721402.

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

It is not a de Polignac number, because 20412798513 - 2⁵ = 20412798481 is a prime.

It is a super-2 number, since 2×20412798513² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20412798113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385468 + ... + 435213.

It is an arithmetic number, because the mean of its divisors is an integer number (3402547572).

Almost surely, 2^20412798513 is an apocalyptic number.

It is an amenable number.

20412798513 is a deficient number, since it is larger than the sum of its proper divisors (6807582063).

20412798513 is an equidigital number, since it uses as much as digits as its factorization.

20412798513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828975.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 20412798513 in words is "twenty billion, four hundred twelve million, seven hundred ninety-eight thousand, five hundred thirteen".