21150023035252 has 48 divisors (see below), whose sum is σ = 40633067365632. Its totient is φ = 9601798821120.

The previous prime is 21150023035249. The next prime is 21150023035279. The reversal of 21150023035252 is 25253032005112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75632208 + ... + 75911335.

It is an arithmetic number, because the mean of its divisors is an integer number (846522236784).

Almost surely, 2^{21150023035252} is an apocalyptic number.

It is an amenable number.

21150023035252 is a deficient number, since it is larger than the sum of its proper divisors (19483044330380).

21150023035252 is a wasteful number, since it uses less digits than its factorization.

21150023035252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151543648 (or 151543646 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 21150023035252 in words is "twenty-one trillion, one hundred fifty billion, twenty-three million, thirty-five thousand, two hundred fifty-two".