68189767776 has 576 divisors, whose sum is σ = 226346545152. Its totient is φ = 19309694976.

The previous prime is 68189767739. The next prime is 68189767823. The reversal of 68189767776 is 67776798186.

It is a Harshad number since it is a multiple of its sum of digits (72).

Its product of digits (298722816) is a multiple of the sum of its prime divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 305783601 + ... + 305783823.

It is an arithmetic number, because the mean of its divisors is an integer number (392962752).

Almost surely, 2^68189767776 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 68189767776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113173272576).

68189767776 is an abundant number, since it is smaller than the sum of its proper divisors (158156777376).

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

68189767776 is a wasteful number, since it uses less digits than its factorization.

68189767776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 384 counting only the distinct ones).

The product of its digits is 298722816, while the sum is 72.

The spelling of 68189767776 in words is "sixty-eight billion, one hundred eighty-nine million, seven hundred sixty-seven thousand, seven hundred seventy-six".