660001295413 has 4 divisors (see below), whose sum is σ = 677839168300. Its totient is φ = 642163422528.

The previous prime is 660001295407. The next prime is 660001295423. The reversal of 660001295413 is 314592100066.

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 627607775089 + 32393520324 = 792217^2 + 179982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660001295413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 17837872849 = 660001295413 / (6 + 6 + 0 + 0 + 0 + 1 + 2 + 9 + 5 + 4 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660001295423) 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, 8918936388 + ... + 8918936461.

It is an arithmetic number, because the mean of its divisors is an integer number (169459792075).

Almost surely, 2^660001295413 is an apocalyptic number.

It is an amenable number.

660001295413 is a deficient number, since it is larger than the sum of its proper divisors (17837872887).

660001295413 is a wasteful number, since it uses less digits than its factorization.

660001295413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17837872886.

The product of its (nonzero) digits is 38880, while the sum is 37.

Adding to 660001295413 its reverse (314592100066), we get a palindrome (974593395479).

The spelling of 660001295413 in words is "six hundred sixty billion, one million, two hundred ninety-five thousand, four hundred thirteen".