20158657360 has 40 divisors (see below), whose sum is σ = 47323935360. Its totient is φ = 7985173632.

The previous prime is 20158657357. The next prime is 20158657417. The reversal of 20158657360 is 6375685102.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 1214980 + ... + 1231459.

It is an arithmetic number, because the mean of its divisors is an integer number (1183098384).

Almost surely, 2^20158657360 is an apocalyptic number.

20158657360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20158657360 is an abundant number, since it is smaller than the sum of its proper divisors (27165278000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20158657360 is a wasteful number, since it uses less digits than its factorization.

20158657360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446555 (or 2446549 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 20158657360 in words is "twenty billion, one hundred fifty-eight million, six hundred fifty-seven thousand, three hundred sixty".