665501633151 has 8 divisors (see below), whose sum is σ = 887482712880. Its totient is φ = 443594154432.

The previous prime is 665501633089. The next prime is 665501633161. The reversal of 665501633151 is 151336105566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 665501633151 - 2¹³ = 665501624959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665501633161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18379150 + ... + 18415323.

It is an arithmetic number, because the mean of its divisors is an integer number (110935339110).

Almost surely, 2^665501633151 is an apocalyptic number.

665501633151 is a deficient number, since it is larger than the sum of its proper divisors (221981079729).

665501633151 is a wasteful number, since it uses less digits than its factorization.

665501633151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36800505.

The product of its (nonzero) digits is 243000, while the sum is 42.

The spelling of 665501633151 in words is "six hundred sixty-five billion, five hundred one million, six hundred thirty-three thousand, one hundred fifty-one".