665148716135 has 32 divisors (see below), whose sum is σ = 849126136320. Its totient is φ = 498776400000.

The previous prime is 665148716033. The next prime is 665148716137. The reversal of 665148716135 is 531617841566.

It is not a de Polignac number, because 665148716135 - 2¹⁰ = 665148715111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665148716137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3508229 + ... + 3692961.

It is an arithmetic number, because the mean of its divisors is an integer number (26535191760).

Almost surely, 2^665148716135 is an apocalyptic number.

665148716135 is a deficient number, since it is larger than the sum of its proper divisors (183977420185).

665148716135 is a wasteful number, since it uses less digits than its factorization.

665148716135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185159.

The product of its digits is 3628800, while the sum is 53.

The spelling of 665148716135 in words is "six hundred sixty-five billion, one hundred forty-eight million, seven hundred sixteen thousand, one hundred thirty-five".