165796331403 has 16 divisors (see below), whose sum is σ = 221997283200. Its totient is φ = 110063352000.

The previous prime is 165796331399. The next prime is 165796331423. The reversal of 165796331403 is 304133697561.

It is not a de Polignac number, because 165796331403 - 2² = 165796331399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165796331423) 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, 3295008 + ... + 3344946.

It is an arithmetic number, because the mean of its divisors is an integer number (13874830200).

Almost surely, 2^165796331403 is an apocalyptic number.

165796331403 is a deficient number, since it is larger than the sum of its proper divisors (56200951797).

165796331403 is a wasteful number, since it uses less digits than its factorization.

165796331403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54602.

The product of its (nonzero) digits is 1224720, while the sum is 48.

The spelling of 165796331403 in words is "one hundred sixty-five billion, seven hundred ninety-six million, three hundred thirty-one thousand, four hundred three".