21550114243552 has 48 divisors (see below), whose sum is σ = 43616220787440. Its totient is φ = 10473550414848.

The previous prime is 21550114243531. The next prime is 21550114243571. The reversal of 21550114243552 is 25534241105512.

It is a congruent number.

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, 7724373 + ... + 10137364.

It is an arithmetic number, because the mean of its divisors is an integer number (908671266405).

Almost surely, 2^{21550114243552} is an apocalyptic number.

It is an amenable number.

21550114243552 is an abundant number, since it is smaller than the sum of its proper divisors (22066106543888).

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

21550114243552 is a wasteful number, since it uses less digits than its factorization.

21550114243552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17862803 (or 17862795 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 40.

The spelling of 21550114243552 in words is "twenty-one trillion, five hundred fifty billion, one hundred fourteen million, two hundred forty-three thousand, five hundred fifty-two".