861353819027 has 8 divisors (see below), whose sum is σ = 927645294576. Its totient is φ = 795067127712.

The previous prime is 861353819017. The next prime is 861353819129. The reversal of 861353819027 is 720918353168.

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

It is not a de Polignac number, because 861353819027 - 2³² = 857058851731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 861353819027.

It is not an unprimeable number, because it can be changed into a prime (861353819017) 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, 817688 + ... + 1546389.

It is an arithmetic number, because the mean of its divisors is an integer number (115955661822).

Almost surely, 2^861353819027 is an apocalyptic number.

861353819027 is a deficient number, since it is larger than the sum of its proper divisors (66291475549).

861353819027 is a wasteful number, since it uses less digits than its factorization.

861353819027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392117.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 861353819027 in words is "eight hundred sixty-one billion, three hundred fifty-three million, eight hundred nineteen thousand, twenty-seven".