8261495580431 has 4 divisors (see below), whose sum is σ = 8261511080472. Its totient is φ = 8261480080392.

The previous prime is 8261495580427. The next prime is 8261495580451. The reversal of 8261495580431 is 1340855941628.

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

It is a cyclic number.

It is not a de Polignac number, because 8261495580431 - 2² = 8261495580427 is a prime.

It is a super-2 number, since 2×8261495580431² (a number of 27 digits) contains 22 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 (8261495580451) 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, 6920960 + ... + 8026373.

It is an arithmetic number, because the mean of its divisors is an integer number (2065377770118).

Almost surely, 2^{8261495580431} is an apocalyptic number.

8261495580431 is a deficient number, since it is larger than the sum of its proper divisors (15500041).

8261495580431 is a wasteful number, since it uses less digits than its factorization.

8261495580431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15500040.

The product of its (nonzero) digits is 8294400, while the sum is 56.

The spelling of 8261495580431 in words is "eight trillion, two hundred sixty-one billion, four hundred ninety-five million, five hundred eighty thousand, four hundred thirty-one".