20307375072 has 36 divisors (see below), whose sum is σ = 57749098680. Its totient is φ = 6769124928.

The previous prime is 20307375013. The next prime is 20307375097. The reversal of 20307375072 is 27057370302.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35255572 + ... + 35256147.

It is an arithmetic number, because the mean of its divisors is an integer number (1604141630).

Almost surely, 2^20307375072 is an apocalyptic number.

It is an amenable number.

20307375072 is an abundant number, since it is smaller than the sum of its proper divisors (37441723608).

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

20307375072 is a wasteful number, since it uses less digits than its factorization.

20307375072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70511735 (or 70511724 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 36.

The spelling of 20307375072 in words is "twenty billion, three hundred seven million, three hundred seventy-five thousand, seventy-two".