66305577000 has 128 divisors (see below), whose sum is σ = 222786869760. Its totient is φ = 16321363200.

The previous prime is 66305576957. The next prime is 66305577029. The reversal of 66305577000 is 77550366.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 66305577000.

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, 811072 + ... + 889071.

It is an arithmetic number, because the mean of its divisors is an integer number (1740522420).

Almost surely, 2^66305577000 is an apocalyptic number.

66305577000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66305577000 is an abundant number, since it is smaller than the sum of its proper divisors (156481292760).

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

66305577000 is a wasteful number, since it uses less digits than its factorization.

66305577000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700180 (or 1700166 counting only the distinct ones).

The product of its (nonzero) digits is 132300, while the sum is 39.

The spelling of 66305577000 in words is "sixty-six billion, three hundred five million, five hundred seventy-seven thousand".