20907054720 has 384 divisors, whose sum is σ = 76572216000. Its totient is φ = 5391083520.

The previous prime is 20907054691. The next prime is 20907054781. The reversal of 20907054720 is 2745070902.

20907054720 is a `hidden beast` number, since 2 + 0 + 90 + 7 + 0 + 547 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16605451 + ... + 16606709.

Almost surely, 2^20907054720 is an apocalyptic number.

20907054720 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 20907054720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38286108000).

20907054720 is an abundant number, since it is smaller than the sum of its proper divisors (55665161280).

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

20907054720 is a wasteful number, since it uses less digits than its factorization.

20907054720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1300 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The spelling of 20907054720 in words is "twenty billion, nine hundred seven million, fifty-four thousand, seven hundred twenty".