20763047939 has 4 divisors (see below), whose sum is σ = 20957095224. Its totient is φ = 20569000656.

The previous prime is 20763047927. The next prime is 20763047957. The reversal of 20763047939 is 93974036702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20763047939 - 2²⁸ = 20494612483 is a prime.

It is a super-2 number, since 2×20763047939² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20763047989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97023482 + ... + 97023695.

It is an arithmetic number, because the mean of its divisors is an integer number (5239273806).

Almost surely, 2^20763047939 is an apocalyptic number.

20763047939 is a deficient number, since it is larger than the sum of its proper divisors (194047285).

20763047939 is a wasteful number, since it uses less digits than its factorization.

20763047939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194047284.

The product of its (nonzero) digits is 1714608, while the sum is 50.

The spelling of 20763047939 in words is "twenty billion, seven hundred sixty-three million, forty-seven thousand, nine hundred thirty-nine".