66791843160 has 192 divisors, whose sum is σ = 233668216800. Its totient is φ = 15228831744.

The previous prime is 66791843051. The next prime is 66791843177. The reversal of 66791843160 is 6134819766.

It is a happy number.

66791843160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66791843160² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2391034 + ... + 2418806.

Almost surely, 2^66791843160 is an apocalyptic number.

66791843160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66791843160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116834108400).

66791843160 is an abundant number, since it is smaller than the sum of its proper divisors (166876373640).

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

66791843160 is a wasteful number, since it uses less digits than its factorization.

66791843160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28210 (or 28199 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 66791843160 in words is "sixty-six billion, seven hundred ninety-one million, eight hundred forty-three thousand, one hundred sixty".