861027760078 has 8 divisors (see below), whose sum is σ = 1291584298680. Its totient is φ = 430499660520.

The previous prime is 861027760067. The next prime is 861027760169. The reversal of 861027760078 is 870067720168.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7033908 + ... + 7155271.

It is an arithmetic number, because the mean of its divisors is an integer number (161448037335).

Almost surely, 2^861027760078 is an apocalyptic number.

861027760078 is a deficient number, since it is larger than the sum of its proper divisors (430556538602).

861027760078 is a wasteful number, since it uses less digits than its factorization.

861027760078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14219522.

The product of its (nonzero) digits is 1580544, while the sum is 52.

The spelling of 861027760078 in words is "eight hundred sixty-one billion, twenty-seven million, seven hundred sixty thousand, seventy-eight".