861540084733 has 2 divisors, whose sum is σ = 861540084734. Its totient is φ = 861540084732.

The previous prime is 861540084701. The next prime is 861540084799. The reversal of 861540084733 is 337480045168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 861104193849 + 435890884 = 927957^2 + 20878^2 .

It is a cyclic number.

It is not a de Polignac number, because 861540084733 - 2⁵ = 861540084701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861540084133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430770042366 + 430770042367.

It is an arithmetic number, because the mean of its divisors is an integer number (430770042367).

Almost surely, 2^861540084733 is an apocalyptic number.

It is an amenable number.

861540084733 is a deficient number, since it is larger than the sum of its proper divisors (1).

861540084733 is an equidigital number, since it uses as much as digits as its factorization.

861540084733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 861540084733 in words is "eight hundred sixty-one billion, five hundred forty million, eighty-four thousand, seven hundred thirty-three".