20749298672 has 40 divisors (see below), whose sum is σ = 41465779056. Its totient is φ = 10050863616.

The previous prime is 20749298659. The next prime is 20749298681. The reversal of 20749298672 is 27689294702.

It is a congruent number.

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, 62723 + ... + 213149.

Almost surely, 2^20749298672 is an apocalyptic number.

It is an amenable number.

20749298672 is a deficient number, since it is larger than the sum of its proper divisors (20716480384).

20749298672 is a wasteful number, since it uses less digits than its factorization.

20749298672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150705 (or 150699 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 20749298672 in words is "twenty billion, seven hundred forty-nine million, two hundred ninety-eight thousand, six hundred seventy-two".