20716233880 has 16 divisors (see below), whose sum is σ = 46611526320. Its totient is φ = 8286493536.

The previous prime is 20716233841. The next prime is 20716233887. The reversal of 20716233880 is 8833261702.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 517905847 = 20716233880 / (2 + 0 + 7 + 1 + 6 + 2 + 3 + 3 + 8 + 8 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20716233887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258952884 + ... + 258952963.

It is an arithmetic number, because the mean of its divisors is an integer number (2913220395).

Almost surely, 2^20716233880 is an apocalyptic number.

20716233880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20716233880 is an abundant number, since it is smaller than the sum of its proper divisors (25895292440).

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

20716233880 is a wasteful number, since it uses less digits than its factorization.

20716233880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517905858 (or 517905854 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 20716233880 in words is "twenty billion, seven hundred sixteen million, two hundred thirty-three thousand, eight hundred eighty".