21943754676 has 36 divisors (see below), whose sum is σ = 55747692000. Its totient is φ = 7277825808.

The previous prime is 21943754641. The next prime is 21943754681. The reversal of 21943754676 is 67645734912.

21943754676 is a `hidden beast` number, since 2 + 1 + 94 + 3 + 7 + 546 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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, 1524366 + ... + 1538693.

It is an arithmetic number, because the mean of its divisors is an integer number (1548547000).

Almost surely, 2^21943754676 is an apocalyptic number.

It is an amenable number.

21943754676 is an abundant number, since it is smaller than the sum of its proper divisors (33803937324).

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

21943754676 is a wasteful number, since it uses less digits than its factorization.

21943754676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063268 (or 3063263 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 54.

The spelling of 21943754676 in words is "twenty-one billion, nine hundred forty-three million, seven hundred fifty-four thousand, six hundred seventy-six".