20201245512 has 64 divisors (see below), whose sum is σ = 60755635200. Its totient is φ = 5468005440.

The previous prime is 20201245489. The next prime is 20201245541. The reversal of 20201245512 is 21554210202.

It is a super-2 number, since 2×20201245512² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3161164 + ... + 3167547.

It is an arithmetic number, because the mean of its divisors is an integer number (949306800).

Almost surely, 2^20201245512 is an apocalyptic number.

It is an amenable number.

20201245512 is an abundant number, since it is smaller than the sum of its proper divisors (40554389688).

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

20201245512 is a wasteful number, since it uses less digits than its factorization.

20201245512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6328746 (or 6328742 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 20201245512 its reverse (21554210202), we get a palindrome (41755455714).

The spelling of 20201245512 in words is "twenty billion, two hundred one million, two hundred forty-five thousand, five hundred twelve".