20320270812 has 36 divisors (see below), whose sum is σ = 51370735416. Its totient is φ = 6772684320.

The previous prime is 20320270807. The next prime is 20320270813. The reversal of 20320270812 is 21807202302.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320270813) 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, 377887 + ... + 428297.

Almost surely, 2^20320270812 is an apocalyptic number.

It is an amenable number.

20320270812 is an abundant number, since it is smaller than the sum of its proper divisors (31050464604).

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

20320270812 is a wasteful number, since it uses less digits than its factorization.

20320270812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61618 (or 61613 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

It can be divided in two parts, 203202708 and 12, that added together give a triangular number (203202720 = T₂₀₁₅₉).

The spelling of 20320270812 in words is "twenty billion, three hundred twenty million, two hundred seventy thousand, eight hundred twelve".