21820390058880 has 192 divisors, whose sum is σ = 86112610927200. Its totient is φ = 4987517718528.

The previous prime is 21820390058813. The next prime is 21820390058921. The reversal of 21820390058880 is 8885009302812.

21820390058880 is a `hidden beast` number, since 2 + 1 + 8 + 20 + 39 + 0 + 0 + 588 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×21820390058880² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270549835 + ... + 270630474.

Almost surely, 2^{21820390058880} is an apocalyptic number.

21820390058880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21820390058880 is an abundant number, since it is smaller than the sum of its proper divisors (64292220868320).

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

21820390058880 is a wasteful number, since it uses less digits than its factorization.

21820390058880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541180341 (or 541180326 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 21820390058880 in words is "twenty-one trillion, eight hundred twenty billion, three hundred ninety million, fifty-eight thousand, eight hundred eighty".