165401536378 has 32 divisors (see below), whose sum is σ = 274504083840. Its totient is φ = 74250043200.

The previous prime is 165401536373. The next prime is 165401536379. The reversal of 165401536378 is 873635104561.

165401536378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165401536373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2875803 + ... + 2932753.

It is an arithmetic number, because the mean of its divisors is an integer number (8578252620).

Almost surely, 2^165401536378 is an apocalyptic number.

165401536378 is a deficient number, since it is larger than the sum of its proper divisors (109102547462).

165401536378 is a wasteful number, since it uses less digits than its factorization.

165401536378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60022.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 165401536378 in words is "one hundred sixty-five billion, four hundred one million, five hundred thirty-six thousand, three hundred seventy-eight".