1275849631617 has 8 divisors (see below), whose sum is σ = 1855781282400. Its totient is φ = 773242200960.

The previous prime is 1275849631613. The next prime is 1275849631619. The reversal of 1275849631617 is 7161369485721.

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

It is not a de Polignac number, because 1275849631617 - 2² = 1275849631613 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1275849631613) 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, 19331054992 + ... + 19331055057.

It is an arithmetic number, because the mean of its divisors is an integer number (231972660300).

Almost surely, 2^{1275849631617} is an apocalyptic number.

It is an amenable number.

1275849631617 is a deficient number, since it is larger than the sum of its proper divisors (579931650783).

1275849631617 is a wasteful number, since it uses less digits than its factorization.

1275849631617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38662110063.

The product of its digits is 15240960, while the sum is 60.

The spelling of 1275849631617 in words is "one trillion, two hundred seventy-five billion, eight hundred forty-nine million, six hundred thirty-one thousand, six hundred seventeen".