165707420774 has 16 divisors (see below), whose sum is σ = 284134195968. Its totient is φ = 71001383112.

The previous prime is 165707420771. The next prime is 165707420783. The reversal of 165707420774 is 477024707561.

165707420774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165707420771) 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 7 ways as a sum of consecutive naturals, for example, 1276112 + ... + 1399955.

It is an arithmetic number, because the mean of its divisors is an integer number (17758387248).

Almost surely, 2^165707420774 is an apocalyptic number.

165707420774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

165707420774 is a deficient number, since it is larger than the sum of its proper divisors (118426775194).

165707420774 is a wasteful number, since it uses less digits than its factorization.

165707420774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680499.

The product of its (nonzero) digits is 2304960, while the sum is 50.

The spelling of 165707420774 in words is "one hundred sixty-five billion, seven hundred seven million, four hundred twenty thousand, seven hundred seventy-four".