20263506312 has 32 divisors (see below), whose sum is σ = 57895732800. Its totient is φ = 5789573184.

The previous prime is 20263506311. The next prime is 20263506323. The reversal of 20263506312 is 21360536202.

It is a self number, because there is not a number n which added to its sum of digits gives 20263506312.

It is not an unprimeable number, because it can be changed into a prime (20263506311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60307887 + ... + 60308222.

It is an arithmetic number, because the mean of its divisors is an integer number (1809241650).

Almost surely, 2^20263506312 is an apocalyptic number.

It is an amenable number.

20263506312 is an abundant number, since it is smaller than the sum of its proper divisors (37632226488).

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

20263506312 is a wasteful number, since it uses less digits than its factorization.

20263506312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120616125 (or 120616121 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The spelling of 20263506312 in words is "twenty billion, two hundred sixty-three million, five hundred six thousand, three hundred twelve".