66344914900 has 72 divisors (see below), whose sum is σ = 157616161920. Its totient is φ = 24039456000.

The previous prime is 66344914879. The next prime is 66344914921. The reversal of 66344914900 is 941944366.

It is an interprime number because it is at equal distance from previous prime (66344914879) and next prime (66344914921).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201781 + ... + 416419.

It is an arithmetic number, because the mean of its divisors is an integer number (2189113360).

Almost surely, 2^66344914900 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 66344914900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78808080960).

66344914900 is an abundant number, since it is smaller than the sum of its proper divisors (91271247020).

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

66344914900 is a wasteful number, since it uses less digits than its factorization.

66344914900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214945 (or 214938 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 66344914900 in words is "sixty-six billion, three hundred forty-four million, nine hundred fourteen thousand, nine hundred".