66005606460 has 48 divisors (see below), whose sum is σ = 184826880000. Its totient is φ = 17600430144.

The previous prime is 66005606437. The next prime is 66005606477. The reversal of 66005606460 is 6460650066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1815541 + ... + 1851539.

It is an arithmetic number, because the mean of its divisors is an integer number (3850560000).

Almost surely, 2^66005606460 is an apocalyptic number.

66005606460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66005606460 is an abundant number, since it is smaller than the sum of its proper divisors (118821273540).

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

66005606460 is a wasteful number, since it uses less digits than its factorization.

66005606460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66570 (or 66568 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 66005606460 in words is "sixty-six billion, five million, six hundred six thousand, four hundred sixty".