20373713920 has 396 divisors, whose sum is σ = 60608206476. Its totient is φ = 6550978560.

The previous prime is 20373713909. The next prime is 20373713933. The reversal of 20373713920 is 2931737302.

It can be written as a sum of positive squares in 6 ways, for example, as 1947280384 + 18426433536 = 44128^2 + 135744^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20373713920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 72504180 + ... + 72504460.

Almost surely, 2^20373713920 is an apocalyptic number.

20373713920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20373713920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30304103238).

20373713920 is an abundant number, since it is smaller than the sum of its proper divisors (40234492556).

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

20373713920 is a wasteful number, since it uses less digits than its factorization.

20373713920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 37.

The spelling of 20373713920 in words is "twenty billion, three hundred seventy-three million, seven hundred thirteen thousand, nine hundred twenty".