20196742984 has 32 divisors (see below), whose sum is σ = 41333983200. Its totient is φ = 9175345920.

The previous prime is 20196742981. The next prime is 20196743011. The reversal of 20196742984 is 48924769102.

It is not an unprimeable number, because it can be changed into a prime (20196742981) 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, 102832 + ... + 225760.

It is an arithmetic number, because the mean of its divisors is an integer number (1291686975).

Almost surely, 2^20196742984 is an apocalyptic number.

It is an amenable number.

20196742984 is an abundant number, since it is smaller than the sum of its proper divisors (21137240216).

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

20196742984 is a wasteful number, since it uses less digits than its factorization.

20196742984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124813 (or 124809 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 20196742984 in words is "twenty billion, one hundred ninety-six million, seven hundred forty-two thousand, nine hundred eighty-four".