1260947995817 has 8 divisors (see below), whose sum is σ = 1322801202240. Its totient is φ = 1200319605520.

The previous prime is 1260947995799. The next prime is 1260947995837. The reversal of 1260947995817 is 7185997490621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1260947995817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1260947995837) 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, 306201923 + ... + 306206040.

It is an arithmetic number, because the mean of its divisors is an integer number (165350150280).

Almost surely, 2^{1260947995817} is an apocalyptic number.

It is an amenable number.

1260947995817 is a deficient number, since it is larger than the sum of its proper divisors (61853206423).

1260947995817 is an equidigital number, since it uses as much as digits as its factorization.

1260947995817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612408063.

The product of its (nonzero) digits is 68584320, while the sum is 68.

The spelling of 1260947995817 in words is "one trillion, two hundred sixty billion, nine hundred forty-seven million, nine hundred ninety-five thousand, eight hundred seventeen".