21650444055330 has 16 divisors (see below), whose sum is σ = 51961065732864. Its totient is φ = 5773451748080.

The previous prime is 21650444055301. The next prime is 21650444055341. The reversal of 21650444055330 is 3355044405612.

It is a super-2 number, since 2×21650444055330² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360840734226 + ... + 360840734285.

It is an arithmetic number, because the mean of its divisors is an integer number (3247566608304).

Almost surely, 2^{21650444055330} is an apocalyptic number.

21650444055330 is an abundant number, since it is smaller than the sum of its proper divisors (30310621677534).

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

21650444055330 is a wasteful number, since it uses less digits than its factorization.

21650444055330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721681468521.

The product of its (nonzero) digits is 864000, while the sum is 42.

The spelling of 21650444055330 in words is "twenty-one trillion, six hundred fifty billion, four hundred forty-four million, fifty-five thousand, three hundred thirty".