20516263124 has 24 divisors (see below), whose sum is σ = 41036271360. Its totient is φ = 8791881696.

The previous prime is 20516263123. The next prime is 20516263129. The reversal of 20516263124 is 42136261502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20516263123) 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, 360062 + ... + 413130.

It is an arithmetic number, because the mean of its divisors is an integer number (1709844640).

Almost surely, 2^20516263124 is an apocalyptic number.

It is an amenable number.

20516263124 is an abundant number, since it is smaller than the sum of its proper divisors (20520008236).

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

20516263124 is a wasteful number, since it uses less digits than its factorization.

20516263124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66887 (or 66885 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 20516263124 in words is "twenty billion, five hundred sixteen million, two hundred sixty-three thousand, one hundred twenty-four".