861132693059 has 4 divisors (see below), whose sum is σ = 861227425800. Its totient is φ = 861037960320.

The previous prime is 861132693037. The next prime is 861132693077. The reversal of 861132693059 is 950396231168.

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 861132693059 - 2¹² = 861132688963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 861132693059.

It is not an unprimeable number, because it can be changed into a prime (861132693089) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 47352734 + ... + 47370915.

It is an arithmetic number, because the mean of its divisors is an integer number (215306856450).

Almost surely, 2^861132693059 is an apocalyptic number.

861132693059 is a deficient number, since it is larger than the sum of its proper divisors (94732741).

861132693059 is an equidigital number, since it uses as much as digits as its factorization.

861132693059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94732740.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The spelling of 861132693059 in words is "eight hundred sixty-one billion, one hundred thirty-two million, six hundred ninety-three thousand, fifty-nine".