20497799048 has 16 divisors (see below), whose sum is σ = 39251105280. Its totient is φ = 10030837648.

The previous prime is 20497799041. The next prime is 20497799059. The reversal of 20497799048 is 84099779402.

It is not an unprimeable number, because it can be changed into a prime (20497799041) 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, 27257336 + ... + 27258087.

It is an arithmetic number, because the mean of its divisors is an integer number (2453194080).

Almost surely, 2^20497799048 is an apocalyptic number.

It is an amenable number.

20497799048 is a deficient number, since it is larger than the sum of its proper divisors (18753306232).

20497799048 is a wasteful number, since it uses less digits than its factorization.

20497799048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54515476 (or 54515472 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 20497799048 in words is "twenty billion, four hundred ninety-seven million, seven hundred ninety-nine thousand, forty-eight".