20847120793 has 8 divisors (see below), whose sum is σ = 21065616000. Its totient is φ = 20628935328.

The previous prime is 20847120779. The next prime is 20847120821. The reversal of 20847120793 is 39702174802.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20847120793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20847120733) 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, 59133 + ... + 212581.

It is an arithmetic number, because the mean of its divisors is an integer number (2633202000).

Almost surely, 2^20847120793 is an apocalyptic number.

It is an amenable number.

20847120793 is a deficient number, since it is larger than the sum of its proper divisors (218495207).

20847120793 is a wasteful number, since it uses less digits than its factorization.

20847120793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154871.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 20847120793 in words is "twenty billion, eight hundred forty-seven million, one hundred twenty thousand, seven hundred ninety-three".