165046981974 has 32 divisors (see below), whose sum is σ = 393652431360. Its totient is φ = 45106007232.

The previous prime is 165046981963. The next prime is 165046982011. The reversal of 165046981974 is 479189640561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85427079 + ... + 85429010.

It is an arithmetic number, because the mean of its divisors is an integer number (12301638480).

Almost surely, 2^165046981974 is an apocalyptic number.

165046981974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

165046981974 is an abundant number, since it is smaller than the sum of its proper divisors (228605449386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165046981974 is a wasteful number, since it uses less digits than its factorization.

165046981974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170856124.

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 165046981974 in words is "one hundred sixty-five billion, forty-six million, nine hundred eighty-one thousand, nine hundred seventy-four".