665152013515 has 16 divisors (see below), whose sum is σ = 898832987136. Its totient is φ = 468142178400.

The previous prime is 665152013497. The next prime is 665152013551. The reversal of 665152013515 is 515310251566.

It is a happy number.

665152013515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 665152013515 - 2²³ = 665143624907 is a prime.

It is a Duffinian number.

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, 195057537 + ... + 195060946.

It is an arithmetic number, because the mean of its divisors is an integer number (56177061696).

Almost surely, 2^665152013515 is an apocalyptic number.

665152013515 is a deficient number, since it is larger than the sum of its proper divisors (233680973621).

665152013515 is a wasteful number, since it uses less digits than its factorization.

665152013515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390118530.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 665152013515 in words is "six hundred sixty-five billion, one hundred fifty-two million, thirteen thousand, five hundred fifteen".