67980787025816 has 128 divisors (see below), whose sum is σ = 159341092392960. Its totient is φ = 26515709337600.

The previous prime is 67980787025803. The next prime is 67980787025843. The reversal of 67980787025816 is 61852078708976.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37207856 + ... + 38992128.

It is an arithmetic number, because the mean of its divisors is an integer number (1244852284320).

Almost surely, 2^{67980787025816} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67980787025816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79670546196480).

67980787025816 is an abundant number, since it is smaller than the sum of its proper divisors (91360305367144).

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

67980787025816 is a wasteful number, since it uses less digits than its factorization.

67980787025816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785625 (or 1785621 counting only the distinct ones).

The product of its (nonzero) digits is 568995840, while the sum is 74.

The spelling of 67980787025816 in words is "sixty-seven trillion, nine hundred eighty billion, seven hundred eighty-seven million, twenty-five thousand, eight hundred sixteen".