20900080740 has 480 divisors, whose sum is σ = 75780270720. Its totient is φ = 4303031040.

The previous prime is 20900080709. The next prime is 20900080757. The reversal of 20900080740 is 4708000902.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 20900080698 and 20900080707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 191743806 + ... + 191743914.

It is an arithmetic number, because the mean of its divisors is an integer number (157875564).

Almost surely, 2^20900080740 is an apocalyptic number.

20900080740 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 20900080740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37890135360).

20900080740 is an abundant number, since it is smaller than the sum of its proper divisors (54880189980).

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

20900080740 is a wasteful number, since it uses less digits than its factorization.

20900080740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The spelling of 20900080740 in words is "twenty billion, nine hundred million, eighty thousand, seven hundred forty".