21884135831350 has 48 divisors (see below), whose sum is σ = 43856180681040. Its totient is φ = 8076504009600.

The previous prime is 21884135831303. The next prime is 21884135831351. The reversal of 21884135831350 is 5313853148812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21884135831351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6514405 + ... + 9284704.

It is an arithmetic number, because the mean of its divisors is an integer number (913670430855).

Almost surely, 2^{21884135831350} is an apocalyptic number.

21884135831350 is an abundant number, since it is smaller than the sum of its proper divisors (21972044849690).

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

21884135831350 is a wasteful number, since it uses less digits than its factorization.

21884135831350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15801265 (or 15801260 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 52.

The spelling of 21884135831350 in words is "twenty-one trillion, eight hundred eighty-four billion, one hundred thirty-five million, eight hundred thirty-one thousand, three hundred fifty".