811572270317 has 8 divisors (see below), whose sum is σ = 813619831680. Its totient is φ = 809525471680.

The previous prime is 811572270259. The next prime is 811572270319. The reversal of 811572270317 is 713072275118.

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

It is a cyclic number.

It is not a de Polignac number, because 811572270317 - 2³⁴ = 794392401133 is a prime.

It is a super-5 number, since 5×811572270317⁵ (a number of 61 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811572270319) 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, 1970918 + ... + 2346840.

It is an arithmetic number, because the mean of its divisors is an integer number (101702478960).

Almost surely, 2^811572270317 is an apocalyptic number.

It is an amenable number.

811572270317 is a deficient number, since it is larger than the sum of its proper divisors (2047561363).

811572270317 is a wasteful number, since it uses less digits than its factorization.

811572270317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381363.

The product of its (nonzero) digits is 164640, while the sum is 44.

The spelling of 811572270317 in words is "eight hundred eleven billion, five hundred seventy-two million, two hundred seventy thousand, three hundred seventeen".