20953598388 has 24 divisors (see below), whose sum is σ = 48894072192. Its totient is φ = 6984198144.

The previous prime is 20953598377. The next prime is 20953598401. The reversal of 20953598388 is 88389535902.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 456756 + ... + 500532.

It is an arithmetic number, because the mean of its divisors is an integer number (2037253008).

Almost surely, 2^20953598388 is an apocalyptic number.

It is an amenable number.

20953598388 is an abundant number, since it is smaller than the sum of its proper divisors (27940473804).

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

20953598388 is a wasteful number, since it uses less digits than its factorization.

20953598388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83671 (or 83669 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 60.

The spelling of 20953598388 in words is "twenty billion, nine hundred fifty-three million, five hundred ninety-eight thousand, three hundred eighty-eight".