66347202456 has 96 divisors (see below), whose sum is σ = 189664550400. Its totient is φ = 20894500800.

The previous prime is 66347202431. The next prime is 66347202457. The reversal of 66347202456 is 65420274366.

66347202456 is a `hidden beast` number, since 6 + 634 + 7 + 2 + 0 + 2 + 4 + 5 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66347202457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 435981 + ... + 568131.

It is an arithmetic number, because the mean of its divisors is an integer number (1975672400).

Almost surely, 2^66347202456 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 66347202456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94832275200).

66347202456 is an abundant number, since it is smaller than the sum of its proper divisors (123317347944).

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

66347202456 is a wasteful number, since it uses less digits than its factorization.

66347202456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132549 (or 132542 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 45.

The spelling of 66347202456 in words is "sixty-six billion, three hundred forty-seven million, two hundred two thousand, four hundred fifty-six".