20796857313 has 8 divisors (see below), whose sum is σ = 28199128800. Its totient is φ = 13629578688.

The previous prime is 20796857311. The next prime is 20796857329. The reversal of 20796857313 is 31375869702.

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

It is not a de Polignac number, because 20796857313 - 2¹ = 20796857311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20796857311) 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, 58748008 + ... + 58748361.

It is an arithmetic number, because the mean of its divisors is an integer number (3524891100).

Almost surely, 2^20796857313 is an apocalyptic number.

It is an amenable number.

20796857313 is a deficient number, since it is larger than the sum of its proper divisors (7402271487).

20796857313 is a wasteful number, since it uses less digits than its factorization.

20796857313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117496431.

The product of its (nonzero) digits is 1905120, while the sum is 51.

The spelling of 20796857313 in words is "twenty billion, seven hundred ninety-six million, eight hundred fifty-seven thousand, three hundred thirteen".