861092534345 has 8 divisors (see below), whose sum is σ = 1033316673864. Its totient is φ = 688870272384.

The previous prime is 861092534311. The next prime is 861092534371. The reversal of 861092534345 is 543435290168.

It can be written as a sum of positive squares in 4 ways, for example, as 196702894144 + 664389640201 = 443512^2 + 815101^2 .

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 861092534345 - 2²² = 861088340041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 861092534293 and 861092534302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 905927 + ... + 1594643.

It is an arithmetic number, because the mean of its divisors is an integer number (129164584233).

Almost surely, 2^861092534345 is an apocalyptic number.

It is an amenable number.

861092534345 is a deficient number, since it is larger than the sum of its proper divisors (172224139519).

861092534345 is a wasteful number, since it uses less digits than its factorization.

861092534345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938779.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 861092534345 in words is "eight hundred sixty-one billion, ninety-two million, five hundred thirty-four thousand, three hundred forty-five".