20537893724 has 24 divisors (see below), whose sum is σ = 36499897728. Its totient is φ = 10110530160.

The previous prime is 20537893703. The next prime is 20537893729. The reversal of 20537893724 is 42739873502.

It is a happy number.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20537893729) 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, 77432 + ... + 216959.

It is an arithmetic number, because the mean of its divisors is an integer number (1520829072).

Almost surely, 2^20537893724 is an apocalyptic number.

It is an amenable number.

20537893724 is a deficient number, since it is larger than the sum of its proper divisors (15962004004).

20537893724 is a wasteful number, since it uses less digits than its factorization.

20537893724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294665 (or 294663 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 20537893724 in words is "twenty billion, five hundred thirty-seven million, eight hundred ninety-three thousand, seven hundred twenty-four".