8091931265765 has 4 divisors (see below), whose sum is σ = 9710317518924. Its totient is φ = 6473545012608.

The previous prime is 8091931265711. The next prime is 8091931265767. The reversal of 8091931265765 is 5675621391908.

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 3999556012321 + 4092375253444 = 1999889^2 + 2022962^2 .

It is a cyclic number.

It is not a de Polignac number, because 8091931265765 - 2¹⁸ = 8091931003621 is a prime.

It is a super-2 number, since 2×8091931265765² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8091931265698 and 8091931265707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8091931265767) 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, 809193126572 + ... + 809193126581.

It is an arithmetic number, because the mean of its divisors is an integer number (2427579379731).

Almost surely, 2^{8091931265765} is an apocalyptic number.

It is an amenable number.

8091931265765 is a deficient number, since it is larger than the sum of its proper divisors (1618386253159).

8091931265765 is a wasteful number, since it uses less digits than its factorization.

8091931265765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618386253158.

The product of its (nonzero) digits is 24494400, while the sum is 62.

The spelling of 8091931265765 in words is "eight trillion, ninety-one billion, nine hundred thirty-one million, two hundred sixty-five thousand, seven hundred sixty-five".