165612252443143 has 12 divisors (see below), whose sum is σ = 182037738463840. Its totient is φ = 150555658207680.

The previous prime is 165612252443111. The next prime is 165612252443159. The reversal of 165612252443143 is 341344252216561.

It is a happy number.

It is not a de Polignac number, because 165612252443143 - 2⁵ = 165612252443111 is a prime.

It is a super-3 number, since 3×165612252443143³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165612252443543) 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, 15701746 + ... + 24036832.

Almost surely, 2^{165612252443143} is an apocalyptic number.

165612252443143 is a deficient number, since it is larger than the sum of its proper divisors (16425486020697).

165612252443143 is a wasteful number, since it uses less digits than its factorization.

165612252443143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8499318 (or 8499307 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 49.

The spelling of 165612252443143 in words is "one hundred sixty-five trillion, six hundred twelve billion, two hundred fifty-two million, four hundred forty-three thousand, one hundred forty-three".