665501066610 has 64 divisors (see below), whose sum is σ = 1611583869312. Its totient is φ = 175869510656.

The previous prime is 665501066569. The next prime is 665501066627. The reversal of 665501066610 is 16660105566.

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, 32489692 + ... + 32510168.

It is an arithmetic number, because the mean of its divisors is an integer number (25180997958).

Almost surely, 2^665501066610 is an apocalyptic number.

665501066610 is an abundant number, since it is smaller than the sum of its proper divisors (946082802702).

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

665501066610 is a wasteful number, since it uses less digits than its factorization.

665501066610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30187.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 665501066610 in words is "six hundred sixty-five billion, five hundred one million, sixty-six thousand, six hundred ten".