20989798962 has 32 divisors (see below), whose sum is σ = 45883900224. Its totient is φ = 6348326400.

The previous prime is 20989798939. The next prime is 20989798987. The reversal of 20989798962 is 26989798902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270823 + ... + 339594.

It is an arithmetic number, because the mean of its divisors is an integer number (1433871882).

Almost surely, 2^20989798962 is an apocalyptic number.

20989798962 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20989798962 is an abundant number, since it is smaller than the sum of its proper divisors (24894101262).

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

20989798962 is a wasteful number, since it uses less digits than its factorization.

20989798962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610954.

The product of its (nonzero) digits is 70543872, while the sum is 69.

The spelling of 20989798962 in words is "twenty billion, nine hundred eighty-nine million, seven hundred ninety-eight thousand, nine hundred sixty-two".