665463515151 has 16 divisors (see below), whose sum is σ = 892535276160. Its totient is φ = 441018681120.

The previous prime is 665463515141. The next prime is 665463515221. The reversal of 665463515151 is 151515364566.

It is a happy number.

It is not a de Polignac number, because 665463515151 - 2¹¹ = 665463513103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 665463515151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665463515131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1441336 + ... + 1846178.

It is an arithmetic number, because the mean of its divisors is an integer number (55783454760).

Almost surely, 2^665463515151 is an apocalyptic number.

665463515151 is a deficient number, since it is larger than the sum of its proper divisors (227071761009).

665463515151 is a wasteful number, since it uses less digits than its factorization.

665463515151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408086.

The product of its digits is 1620000, while the sum is 48.

The spelling of 665463515151 in words is "six hundred sixty-five billion, four hundred sixty-three million, five hundred fifteen thousand, one hundred fifty-one".