168887186440496 has 20 divisors (see below), whose sum is σ = 328522584786984. Its totient is φ = 84107164560000.

The previous prime is 168887186440493. The next prime is 168887186440537. The reversal of 168887186440496 is 694044681788861.

It is a self number, because there is not a number n which added to its sum of digits gives 168887186440496.

It is not an unprimeable number, because it can be changed into a prime (168887186440493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21026787125 + ... + 21026795156.

Almost surely, 2^{168887186440496} is an apocalyptic number.

168887186440496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

168887186440496 is a deficient number, since it is larger than the sum of its proper divisors (159635398346488).

168887186440496 is a wasteful number, since it uses less digits than its factorization.

168887186440496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42053582540 (or 42053582534 counting only the distinct ones).

The product of its (nonzero) digits is 3567255552, while the sum is 80.

The spelling of 168887186440496 in words is "one hundred sixty-eight trillion, eight hundred eighty-seven billion, one hundred eighty-six million, four hundred forty thousand, four hundred ninety-six".