21883850551720 has 32 divisors (see below), whose sum is σ = 49387421063520. Its totient is φ = 8727094474560.

The previous prime is 21883850551681. The next prime is 21883850551723. The reversal of 21883850551720 is 2715505838812.

It is not an unprimeable number, because it can be changed into a prime (21883850551723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 826416162 + ... + 826442641.

It is an arithmetic number, because the mean of its divisors is an integer number (1543356908235).

Almost surely, 2^{21883850551720} is an apocalyptic number.

21883850551720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21883850551720 is an abundant number, since it is smaller than the sum of its proper divisors (27503570511800).

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

21883850551720 is a wasteful number, since it uses less digits than its factorization.

21883850551720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652859145 (or 1652859141 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 55.

The spelling of 21883850551720 in words is "twenty-one trillion, eight hundred eighty-three billion, eight hundred fifty million, five hundred fifty-one thousand, seven hundred twenty".