660011660040 has 64 divisors (see below), whose sum is σ = 2048312059200. Its totient is φ = 169934035712.

The previous prime is 660011659999. The next prime is 660011660053. The reversal of 660011660040 is 40066110066.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 94825782 + ... + 94832741.

It is an arithmetic number, because the mean of its divisors is an integer number (32004875925).

Almost surely, 2^660011660040 is an apocalyptic number.

660011660040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

660011660040 is an abundant number, since it is smaller than the sum of its proper divisors (1388300399160).

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

660011660040 is a wasteful number, since it uses less digits than its factorization.

660011660040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189658566 (or 189658562 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 660011660040 in words is "six hundred sixty billion, eleven million, six hundred sixty thousand, forty".