165897836788 has 12 divisors (see below), whose sum is σ = 290912503392. Its totient is φ = 82779978680.

The previous prime is 165897836779. The next prime is 165897836833. The reversal of 165897836788 is 887638798561.

165897836788 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42232720 + ... + 42236647.

It is an arithmetic number, because the mean of its divisors is an integer number (24242708616).

Almost surely, 2^165897836788 is an apocalyptic number.

It is an amenable number.

165897836788 is a deficient number, since it is larger than the sum of its proper divisors (125014666604).

165897836788 is a wasteful number, since it uses less digits than its factorization.

165897836788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84469862 (or 84469860 counting only the distinct ones).

The product of its digits is 975421440, while the sum is 76.

The spelling of 165897836788 in words is "one hundred sixty-five billion, eight hundred ninety-seven million, eight hundred thirty-six thousand, seven hundred eighty-eight".