20002551432 has 16 divisors (see below), whose sum is σ = 50006378640. Its totient is φ = 6667517136.

The previous prime is 20002551409. The next prime is 20002551433. The reversal of 20002551432 is 23415520002.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 833439643 = 20002551432 / (2 + 0 + 0 + 0 + 2 + 5 + 5 + 1 + 4 + 3 + 2).

It is not an unprimeable number, because it can be changed into a prime (20002551433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416719798 + ... + 416719845.

It is an arithmetic number, because the mean of its divisors is an integer number (3125398665).

Almost surely, 2^20002551432 is an apocalyptic number.

It is an amenable number.

20002551432 is an abundant number, since it is smaller than the sum of its proper divisors (30003827208).

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

20002551432 is a wasteful number, since it uses less digits than its factorization.

20002551432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833439652 (or 833439648 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The spelling of 20002551432 in words is "twenty billion, two million, five hundred fifty-one thousand, four hundred thirty-two".