21900754364090 has 32 divisors (see below), whose sum is σ = 45816590252160. Its totient is φ = 7381561760064.

The previous prime is 21900754364089. The next prime is 21900754364117. The reversal of 21900754364090 is 9046345700912.

It is a super-3 number, since 3×21900754364090³ (a number of 41 digits) contains 333 as substring.

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, 2651418917 + ... + 2651427176.

It is an arithmetic number, because the mean of its divisors is an integer number (1431768445380).

Almost surely, 2^{21900754364090} is an apocalyptic number.

21900754364090 is an abundant number, since it is smaller than the sum of its proper divisors (23915835888070).

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

21900754364090 is a wasteful number, since it uses less digits than its factorization.

21900754364090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302846166.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 21900754364090 in words is "twenty-one trillion, nine hundred billion, seven hundred fifty-four million, three hundred sixty-four thousand, ninety".