861358106934 has 48 divisors (see below), whose sum is σ = 2014233722592. Its totient is φ = 264453289344.

The previous prime is 861358106927. The next prime is 861358106993. The reversal of 861358106934 is 439601853168.

861358106934 is a `hidden beast` number, since 8 + 613 + 5 + 8 + 10 + 6 + 9 + 3 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3920434 + ... + 4134309.

It is an arithmetic number, because the mean of its divisors is an integer number (41963202554).

Almost surely, 2^861358106934 is an apocalyptic number.

861358106934 is an abundant number, since it is smaller than the sum of its proper divisors (1152875615658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

861358106934 is a wasteful number, since it uses less digits than its factorization.

861358106934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8055221 (or 8055218 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 861358106934 in words is "eight hundred sixty-one billion, three hundred fifty-eight million, one hundred six thousand, nine hundred thirty-four".