66713116078 has 16 divisors (see below), whose sum is σ = 114382316160. Its totient is φ = 28587091896.

The previous prime is 66713116037. The next prime is 66713116097. The reversal of 66713116078 is 87061131766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254988 + ... + 445471.

It is an arithmetic number, because the mean of its divisors is an integer number (7148894760).

Almost surely, 2^66713116078 is an apocalyptic number.

66713116078 is a deficient number, since it is larger than the sum of its proper divisors (47669200082).

66713116078 is a wasteful number, since it uses less digits than its factorization.

66713116078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707271.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 66713116078 in words is "sixty-six billion, seven hundred thirteen million, one hundred sixteen thousand, seventy-eight".