20514953472 has 144 divisors (see below), whose sum is σ = 58886233728. Its totient is φ = 6303006720.

The previous prime is 20514953453. The next prime is 20514953489. The reversal of 20514953472 is 27435941502.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10292508 + ... + 10294500.

Almost surely, 2^20514953472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20514953472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29443116864).

20514953472 is an abundant number, since it is smaller than the sum of its proper divisors (38371280256).

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

20514953472 is a wasteful number, since it uses less digits than its factorization.

20514953472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056 (or 3042 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 20514953472 in words is "twenty billion, five hundred fourteen million, nine hundred fifty-three thousand, four hundred seventy-two".