66827374320 has 160 divisors (see below), whose sum is σ = 236965404672. Its totient is φ = 15261566976.

The previous prime is 66827374307. The next prime is 66827374333. The reversal of 66827374320 is 2347372866.

It is an interprime number because it is at equal distance from previous prime (66827374307) and next prime (66827374333).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 66827374320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1987569 + ... + 2020911.

Almost surely, 2^66827374320 is an apocalyptic number.

66827374320 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 66827374320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118482702336).

66827374320 is an abundant number, since it is smaller than the sum of its proper divisors (170138030352).

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

66827374320 is a wasteful number, since it uses less digits than its factorization.

66827374320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34559 (or 34553 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 48.

The spelling of 66827374320 in words is "sixty-six billion, eight hundred twenty-seven million, three hundred seventy-four thousand, three hundred twenty".