165823860783 has 32 divisors (see below), whose sum is σ = 256356334080. Its totient is φ = 93386304000.

The previous prime is 165823860743. The next prime is 165823860791. The reversal of 165823860783 is 387068328561.

It is not a de Polignac number, because 165823860783 - 2¹⁴ = 165823844399 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165823860743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 429283 + ... + 718283.

It is an arithmetic number, because the mean of its divisors is an integer number (8011135440).

Almost surely, 2^165823860783 is an apocalyptic number.

165823860783 is a deficient number, since it is larger than the sum of its proper divisors (90532473297).

165823860783 is a wasteful number, since it uses less digits than its factorization.

165823860783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289407.

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 165823860783 in words is "one hundred sixty-five billion, eight hundred twenty-three million, eight hundred sixty thousand, seven hundred eighty-three".