66620264800260 has 48 divisors (see below), whose sum is σ = 186712223031936. Its totient is φ = 17748691414272.

The previous prime is 66620264800241. The next prime is 66620264800319. The reversal of 66620264800260 is 6200846202666.

66620264800260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522202329 + ... + 522329888.

It is an arithmetic number, because the mean of its divisors is an integer number (3889837979832).

Almost surely, 2^{66620264800260} is an apocalyptic number.

66620264800260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66620264800260 is an abundant number, since it is smaller than the sum of its proper divisors (120091958231676).

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

66620264800260 is a wasteful number, since it uses less digits than its factorization.

66620264800260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044533292 (or 1044533290 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 48.

The spelling of 66620264800260 in words is "sixty-six trillion, six hundred twenty billion, two hundred sixty-four million, eight hundred thousand, two hundred sixty".