165273044337040 has 40 divisors (see below), whose sum is σ = 385677761079168. Its totient is φ = 65865272273280.

The previous prime is 165273044337017. The next prime is 165273044337127. The reversal of 165273044337040 is 40733440372561.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×165273044337040² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3811626022 + ... + 3811669381.

Almost surely, 2^{165273044337040} is an apocalyptic number.

165273044337040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165273044337040 is an abundant number, since it is smaller than the sum of its proper divisors (220404716742128).

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

165273044337040 is a wasteful number, since it uses less digits than its factorization.

165273044337040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7623295687 (or 7623295681 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 49.

The spelling of 165273044337040 in words is "one hundred sixty-five trillion, two hundred seventy-three billion, forty-four million, three hundred thirty-seven thousand, forty".