21752737437116 has 36 divisors (see below), whose sum is σ = 44492227435656. Its totient is φ = 9278418794400.

The previous prime is 21752737437113. The next prime is 21752737437127. The reversal of 21752737437116 is 61173473725712.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21752737437113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262952375 + ... + 263035086.

It is an arithmetic number, because the mean of its divisors is an integer number (1235895206546).

Almost surely, 2^{21752737437116} is an apocalyptic number.

It is an amenable number.

21752737437116 is an abundant number, since it is smaller than the sum of its proper divisors (22739489998540).

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

21752737437116 is a wasteful number, since it uses less digits than its factorization.

21752737437116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525987690 (or 525987681 counting only the distinct ones).

The product of its digits is 10372320, while the sum is 56.

The spelling of 21752737437116 in words is "twenty-one trillion, seven hundred fifty-two billion, seven hundred thirty-seven million, four hundred thirty-seven thousand, one hundred sixteen".