861094433451 has 32 divisors (see below), whose sum is σ = 1315779673600. Its totient is φ = 490691602944.

The previous prime is 861094433443. The next prime is 861094433489. The reversal of 861094433451 is 154334490168.

It is not a de Polignac number, because 861094433451 - 2³ = 861094433443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 861094433451.

It is not an unprimeable number, because it can be changed into a prime (861094433411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20829600 + ... + 20870898.

It is an arithmetic number, because the mean of its divisors is an integer number (41118114800).

Almost surely, 2^861094433451 is an apocalyptic number.

861094433451 is a deficient number, since it is larger than the sum of its proper divisors (454685240149).

861094433451 is a wasteful number, since it uses less digits than its factorization.

861094433451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44035.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 861094433451 in words is "eight hundred sixty-one billion, ninety-four million, four hundred thirty-three thousand, four hundred fifty-one".