215765099252 has 24 divisors (see below), whose sum is σ = 394703016960. Its totient is φ = 103080912480.

The previous prime is 215765099227. The next prime is 215765099257. The reversal of 215765099252 is 252990567512.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 215765099194 and 215765099203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215765099257) 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, 11003123 + ... + 11022714.

It is an arithmetic number, because the mean of its divisors is an integer number (16445959040).

Almost surely, 2^215765099252 is an apocalyptic number.

It is an amenable number.

215765099252 is a deficient number, since it is larger than the sum of its proper divisors (178937917708).

215765099252 is a wasteful number, since it uses less digits than its factorization.

215765099252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22025951 (or 22025949 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 53.

The spelling of 215765099252 in words is "two hundred fifteen billion, seven hundred sixty-five million, ninety-nine thousand, two hundred fifty-two".