21941663922 has 24 divisors (see below), whose sum is σ = 48645861264. Its totient is φ = 7143797304.

The previous prime is 21941663917. The next prime is 21941663957. The reversal of 21941663922 is 22936614912.

21941663922 is a `hidden beast` number, since 2 + 1 + 9 + 4 + 1 + 6 + 639 + 2 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14173428 + ... + 14174975.

It is an arithmetic number, because the mean of its divisors is an integer number (2026910886).

Almost surely, 2^21941663922 is an apocalyptic number.

21941663922 is an abundant number, since it is smaller than the sum of its proper divisors (26704197342).

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

21941663922 is a wasteful number, since it uses less digits than its factorization.

21941663922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28348454 (or 28348451 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The spelling of 21941663922 in words is "twenty-one billion, nine hundred forty-one million, six hundred sixty-three thousand, nine hundred twenty-two".