633123145212665 has 4 divisors (see below), whose sum is σ = 759747774255204. Its totient is φ = 506498516170128.

The previous prime is 633123145212643. The next prime is 633123145212667. The reversal of 633123145212665 is 566212541321336.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 144831019499776 + 488292125712889 = 12034576^2 + 22097333^2 .

It is a cyclic number.

It is not a de Polignac number, because 633123145212665 - 2¹⁴ = 633123145196281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (633123145212667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63312314521262 + ... + 63312314521271.

It is an arithmetic number, because the mean of its divisors is an integer number (189936943563801).

Almost surely, 2^{633123145212665} is an apocalyptic number.

It is an amenable number.

633123145212665 is a deficient number, since it is larger than the sum of its proper divisors (126624629042539).

633123145212665 is a wasteful number, since it uses less digits than its factorization.

633123145212665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126624629042538.

The product of its digits is 4665600, while the sum is 50.

The spelling of 633123145212665 in words is "six hundred thirty-three trillion, one hundred twenty-three billion, one hundred forty-five million, two hundred twelve thousand, six hundred sixty-five".