21741130990656 has 280 divisors, whose sum is σ = 80350160189376. Its totient is φ = 5647046906880.

The previous prime is 21741130990571. The next prime is 21741130990693. The reversal of 21741130990656 is 65609903114712.

21741130990656 is a `hidden beast` number, since 217 + 411 + 3 + 0 + 9 + 9 + 0 + 6 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26833891 + ... + 27632226.

Almost surely, 2^{21741130990656} is an apocalyptic number.

It is an amenable number.

21741130990656 is an abundant number, since it is smaller than the sum of its proper divisors (58609029198720).

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

21741130990656 is a wasteful number, since it uses less digits than its factorization.

21741130990656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54466159 (or 54466140 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 21741130990656 in words is "twenty-one trillion, seven hundred forty-one billion, one hundred thirty million, nine hundred ninety thousand, six hundred fifty-six".