252637801789 has 16 divisors (see below), whose sum is σ = 260261460400. Its totient is φ = 245057218560.

The previous prime is 252637801783. The next prime is 252637801811. The reversal of 252637801789 is 987108736252.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 11095040889 + 241542760900 = 105333^2 + 491470^2 .

It is a cyclic number.

It is not a de Polignac number, because 252637801789 - 2²⁹ = 252100930877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252637801783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16451887 + ... + 16467235.

It is an arithmetic number, because the mean of its divisors is an integer number (16266341275).

Almost surely, 2^252637801789 is an apocalyptic number.

It is an amenable number.

252637801789 is a deficient number, since it is larger than the sum of its proper divisors (7623658611).

252637801789 is a wasteful number, since it uses less digits than its factorization.

252637801789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16720.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 252637801789 in words is "two hundred fifty-two billion, six hundred thirty-seven million, eight hundred one thousand, seven hundred eighty-nine".