21976842396 has 48 divisors (see below), whose sum is σ = 51876193824. Its totient is φ = 7240805376.

The previous prime is 21976842373. The next prime is 21976842409. The reversal of 21976842396 is 69324867912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354366 + ... + 411738.

It is an arithmetic number, because the mean of its divisors is an integer number (1080754038).

Almost surely, 2^21976842396 is an apocalyptic number.

It is an amenable number.

21976842396 is an abundant number, since it is smaller than the sum of its proper divisors (29899351428).

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

21976842396 is a wasteful number, since it uses less digits than its factorization.

21976842396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57750 (or 57748 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 57.

The spelling of 21976842396 in words is "twenty-one billion, nine hundred seventy-six million, eight hundred forty-two thousand, three hundred ninety-six".