20158684372 has 24 divisors (see below), whose sum is σ = 37657448640. Its totient is φ = 9414357120.

The previous prime is 20158684367. The next prime is 20158684373. The reversal of 20158684372 is 27348685102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20158684373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1862533 + ... + 1873324.

It is an arithmetic number, because the mean of its divisors is an integer number (1569060360).

Almost surely, 2^20158684372 is an apocalyptic number.

It is an amenable number.

20158684372 is a deficient number, since it is larger than the sum of its proper divisors (17498764268).

20158684372 is a wasteful number, since it uses less digits than its factorization.

20158684372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3735951 (or 3735949 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 20158684372 in words is "twenty billion, one hundred fifty-eight million, six hundred eighty-four thousand, three hundred seventy-two".