20353086720 has 108 divisors (see below), whose sum is σ = 70419599796. Its totient is φ = 5427486720.

The previous prime is 20353086707. The next prime is 20353086727. The reversal of 20353086720 is 2768035302.

20353086720 is a `hidden beast` number, since 20 + 3 + 530 + 86 + 7 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9939292416 + 10413794304 = 99696^2 + 102048^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20353086727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 871861 + ... + 894900.

Almost surely, 2^20353086720 is an apocalyptic number.

20353086720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20353086720 is an abundant number, since it is smaller than the sum of its proper divisors (50066513076).

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

20353086720 is a wasteful number, since it uses less digits than its factorization.

20353086720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766788 (or 1766771 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 20353086720 in words is "twenty billion, three hundred fifty-three million, eighty-six thousand, seven hundred twenty".