20743724392 has 16 divisors (see below), whose sum is σ = 40941561600. Its totient is φ = 9825974640.

The previous prime is 20743724387. The next prime is 20743724401. The reversal of 20743724392 is 29342734702.

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, 68235784 + ... + 68236087.

It is an arithmetic number, because the mean of its divisors is an integer number (2558847600).

Almost surely, 2^20743724392 is an apocalyptic number.

It is an amenable number.

20743724392 is a deficient number, since it is larger than the sum of its proper divisors (20197837208).

20743724392 is a wasteful number, since it uses less digits than its factorization.

20743724392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136471896 (or 136471892 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 20743724392 in words is "twenty billion, seven hundred forty-three million, seven hundred twenty-four thousand, three hundred ninety-two".