66602954880 has 384 divisors, whose sum is σ = 286740604800. Its totient is φ = 13839482880.

The previous prime is 66602954867. The next prime is 66602954959. The reversal of 66602954880 is 8845920666.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 368436 + ... + 518604.

It is an arithmetic number, because the mean of its divisors is an integer number (746720325).

Almost surely, 2^66602954880 is an apocalyptic number.

66602954880 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 66602954880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143370302400).

66602954880 is an abundant number, since it is smaller than the sum of its proper divisors (220137649920).

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

66602954880 is a wasteful number, since it uses less digits than its factorization.

66602954880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150212 (or 150197 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 66602954880 in words is "sixty-six billion, six hundred two million, nine hundred fifty-four thousand, eight hundred eighty".