76666727318216 has 64 divisors (see below), whose sum is σ = 167423296913280. Its totient is φ = 32229957726720.

The previous prime is 76666727318113. The next prime is 76666727318231. The reversal of 76666727318216 is 61281372766667.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10272635 + ... + 16089141.

It is an arithmetic number, because the mean of its divisors is an integer number (2615989014270).

Almost surely, 2^{76666727318216} 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 76666727318216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83711648456640).

76666727318216 is an abundant number, since it is smaller than the sum of its proper divisors (90756569595064).

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

76666727318216 is a wasteful number, since it uses less digits than its factorization.

76666727318216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5821014 (or 5821010 counting only the distinct ones).

The product of its digits is 256048128, while the sum is 68.

The spelling of 76666727318216 in words is "seventy-six trillion, six hundred sixty-six billion, seven hundred twenty-seven million, three hundred eighteen thousand, two hundred sixteen".