21958934748 has 24 divisors (see below), whose sum is σ = 54251486352. Its totient is φ = 6889077504.

The previous prime is 21958934737. The next prime is 21958934761. The reversal of 21958934748 is 84743985912.

It is a junction number, because it is equal to n+sod(n) for n = 21958934691 and 21958934700.

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, 53820715 + ... + 53821122.

It is an arithmetic number, because the mean of its divisors is an integer number (2260478598).

Almost surely, 2^21958934748 is an apocalyptic number.

It is an amenable number.

21958934748 is an abundant number, since it is smaller than the sum of its proper divisors (32292551604).

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

21958934748 is a wasteful number, since it uses less digits than its factorization.

21958934748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107641861 (or 107641859 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 60.

The spelling of 21958934748 in words is "twenty-one billion, nine hundred fifty-eight million, nine hundred thirty-four thousand, seven hundred forty-eight".