168404536472 has 16 divisors (see below), whose sum is σ = 316242066240. Its totient is φ = 84073318816.

The previous prime is 168404536453. The next prime is 168404536499. The reversal of 168404536472 is 274635404861.

It is a self number, because there is not a number n which added to its sum of digits gives 168404536472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16113128 + ... + 16123575.

It is an arithmetic number, because the mean of its divisors is an integer number (19765129140).

Almost surely, 2^168404536472 is an apocalyptic number.

It is an amenable number.

168404536472 is a deficient number, since it is larger than the sum of its proper divisors (147837529768).

168404536472 is a wasteful number, since it uses less digits than its factorization.

168404536472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32237362 (or 32237358 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 50.

The spelling of 168404536472 in words is "one hundred sixty-eight billion, four hundred four million, five hundred thirty-six thousand, four hundred seventy-two".