20949880004 has 12 divisors (see below), whose sum is σ = 38256302784. Its totient is φ = 10019507784.

The previous prime is 20949879989. The next prime is 20949880037. The reversal of 20949880004 is 40008894902.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113857952 + ... + 113858135.

It is an arithmetic number, because the mean of its divisors is an integer number (3188025232).

Almost surely, 2^20949880004 is an apocalyptic number.

It is an amenable number.

20949880004 is a deficient number, since it is larger than the sum of its proper divisors (17306422780).

20949880004 is a wasteful number, since it uses less digits than its factorization.

20949880004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227716114 (or 227716112 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 20949880004 in words is "twenty billion, nine hundred forty-nine million, eight hundred eighty thousand, four".