20993798948 has 24 divisors (see below), whose sum is σ = 36841900704. Its totient is φ = 10467576000.

The previous prime is 20993798897. The next prime is 20993798977. The reversal of 20993798948 is 84989739902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3251123 + ... + 3257573.

It is an arithmetic number, because the mean of its divisors is an integer number (1535079196).

Almost surely, 2^20993798948 is an apocalyptic number.

It is an amenable number.

20993798948 is a deficient number, since it is larger than the sum of its proper divisors (15848101756).

20993798948 is a wasteful number, since it uses less digits than its factorization.

20993798948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8603 (or 8601 counting only the distinct ones).

The product of its (nonzero) digits is 70543872, while the sum is 68.

The spelling of 20993798948 in words is "twenty billion, nine hundred ninety-three million, seven hundred ninety-eight thousand, nine hundred forty-eight".