165266946819432 has 48 divisors (see below), whose sum is σ = 447598586506500. Its totient is φ = 55088907745536.

The previous prime is 165266946819421. The next prime is 165266946819439. The reversal of 165266946819432 is 234918649662561.

It is a happy number.

165266946819432 is a `hidden beast` number, since 1 + 6 + 5 + 26 + 6 + 94 + 6 + 81 + 9 + 432 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 122000993704836 + 43265953114596 = 11045406^2 + 6577686^2 .

It is a super-2 number, since 2×165266946819432² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (165266946819439) 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, 86389044 + ... + 88281372.

Almost surely, 2^{165266946819432} is an apocalyptic number.

165266946819432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165266946819432 is an abundant number, since it is smaller than the sum of its proper divisors (282331639687068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165266946819432 is a wasteful number, since it uses less digits than its factorization.

165266946819432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105330 (or 3105323 counting only the distinct ones).

The product of its digits is 806215680, while the sum is 72.

The spelling of 165266946819432 in words is "one hundred sixty-five trillion, two hundred sixty-six billion, nine hundred forty-six million, eight hundred nineteen thousand, four hundred thirty-two".