861772774341 has 8 divisors (see below), whose sum is σ = 1150610878144. Its totient is φ = 573724926720.

The previous prime is 861772774337. The next prime is 861772774403. The reversal of 861772774341 is 143477277168.

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

It is not a de Polignac number, because 861772774341 - 2² = 861772774337 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861772794341) 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, 197561500 + ... + 197565861.

It is an arithmetic number, because the mean of its divisors is an integer number (143826359768).

Almost surely, 2^861772774341 is an apocalyptic number.

It is an amenable number.

861772774341 is a deficient number, since it is larger than the sum of its proper divisors (288838103803).

861772774341 is a wasteful number, since it uses less digits than its factorization.

861772774341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395128091.

The product of its digits is 11063808, while the sum is 57.

The spelling of 861772774341 in words is "eight hundred sixty-one billion, seven hundred seventy-two million, seven hundred seventy-four thousand, three hundred forty-one".