165974922542 has 32 divisors (see below), whose sum is σ = 293543326944. Its totient is φ = 69388387200.

The previous prime is 165974922523. The next prime is 165974922559. The reversal of 165974922542 is 245229479561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 968309 + ... + 1126752.

It is an arithmetic number, because the mean of its divisors is an integer number (9173228967).

Almost surely, 2^165974922542 is an apocalyptic number.

165974922542 is a deficient number, since it is larger than the sum of its proper divisors (127568404402).

165974922542 is a wasteful number, since it uses less digits than its factorization.

165974922542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095364.

The product of its digits is 10886400, while the sum is 56.

The spelling of 165974922542 in words is "one hundred sixty-five billion, nine hundred seventy-four million, nine hundred twenty-two thousand, five hundred forty-two".