66201622404 has 96 divisors (see below), whose sum is σ = 163652966400. Its totient is φ = 20770888320.

The previous prime is 66201622363. The next prime is 66201622427. The reversal of 66201622404 is 40422610266.

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, 29806014 + ... + 29808234.

It is an arithmetic number, because the mean of its divisors is an integer number (1704718400).

Almost surely, 2^66201622404 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 66201622404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81826483200).

66201622404 is an abundant number, since it is smaller than the sum of its proper divisors (97451343996).

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

66201622404 is a wasteful number, since it uses less digits than its factorization.

66201622404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033 (or 3031 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 66201622404 in words is "sixty-six billion, two hundred one million, six hundred twenty-two thousand, four hundred four".