252165642443 has 16 divisors (see below), whose sum is σ = 303476175072. Its totient is φ = 206446368000.

The previous prime is 252165642433. The next prime is 252165642467. The reversal of 252165642443 is 344246561252.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 252165642443 - 2¹⁶ = 252165576907 is a prime.

It is a super-2 number, since 2×252165642443² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252165642394 and 252165642403.

It is not an unprimeable number, because it can be changed into a prime (252165642433) 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, 21498968 + ... + 21510693.

It is an arithmetic number, because the mean of its divisors is an integer number (18967260942).

Almost surely, 2^252165642443 is an apocalyptic number.

252165642443 is a deficient number, since it is larger than the sum of its proper divisors (51310532629).

252165642443 is a wasteful number, since it uses less digits than its factorization.

252165642443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43009726.

The product of its digits is 1382400, while the sum is 44.

The spelling of 252165642443 in words is "two hundred fifty-two billion, one hundred sixty-five million, six hundred forty-two thousand, four hundred forty-three".