165947594743 has 12 divisors (see below), whose sum is σ = 193082743920. Its totient is φ = 142210095552.

The previous prime is 165947594717. The next prime is 165947594767. The reversal of 165947594743 is 347495749561.

It is a happy number.

It is not a de Polignac number, because 165947594743 - 2⁵ = 165947594711 is a prime.

It is a super-2 number, since 2×165947594743² (a number of 23 digits) contains 22 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 (165947594543) 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, 134658 + ... + 591631.

It is an arithmetic number, because the mean of its divisors is an integer number (16090228660).

Almost surely, 2^165947594743 is an apocalyptic number.

165947594743 is a deficient number, since it is larger than the sum of its proper divisors (27135149177).

165947594743 is an equidigital number, since it uses as much as digits as its factorization.

165947594743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730966 (or 730959 counting only the distinct ones).

The product of its digits is 114307200, while the sum is 64.

The spelling of 165947594743 in words is "one hundred sixty-five billion, nine hundred forty-seven million, five hundred ninety-four thousand, seven hundred forty-three".