861007866353 has 4 divisors (see below), whose sum is σ = 875601220080. Its totient is φ = 846414512628.

The previous prime is 861007866343. The next prime is 861007866371. The reversal of 861007866353 is 353668700168.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 861007866353 - 2⁶ = 861007866289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 861007866295 and 861007866304.

It is not an unprimeable number, because it can be changed into a prime (861007866343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7296676775 + ... + 7296676892.

It is an arithmetic number, because the mean of its divisors is an integer number (218900305020).

Almost surely, 2^861007866353 is an apocalyptic number.

It is an amenable number.

861007866353 is a deficient number, since it is larger than the sum of its proper divisors (14593353727).

861007866353 is a wasteful number, since it uses less digits than its factorization.

861007866353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14593353726.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 861007866353 in words is "eight hundred sixty-one billion, seven million, eight hundred sixty-six thousand, three hundred fifty-three".