168661504974 has 32 divisors (see below), whose sum is σ = 338722560000. Its totient is φ = 55987392032.

The previous prime is 168661504969. The next prime is 168661504981. The reversal of 168661504974 is 479405166861.

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, 4980652 + ... + 5014400.

It is an arithmetic number, because the mean of its divisors is an integer number (10585080000).

Almost surely, 2^168661504974 is an apocalyptic number.

168661504974 is an abundant number, since it is smaller than the sum of its proper divisors (170061055026).

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

168661504974 is a wasteful number, since it uses less digits than its factorization.

168661504974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37184.

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 168661504974 in words is "one hundred sixty-eight billion, six hundred sixty-one million, five hundred four thousand, nine hundred seventy-four".