67166620416 has 180 divisors, whose sum is σ = 228890447632. Its totient is φ = 19190421504.

The previous prime is 67166620403. The next prime is 67166620421. The reversal of 67166620416 is 61402666176.

It is a super-2 number, since 2×67166620416² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 86215 + ... + 376518.

Almost surely, 2^67166620416 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 67166620416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114445223816).

67166620416 is an abundant number, since it is smaller than the sum of its proper divisors (161723827216).

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

67166620416 is an equidigital number, since it uses as much as digits as its factorization.

67166620416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462768 (or 462745 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 67166620416 in words is "sixty-seven billion, one hundred sixty-six million, six hundred twenty thousand, four hundred sixteen".