861763651204 has 24 divisors (see below), whose sum is σ = 1549061248448. Its totient is φ = 419177967840.

The previous prime is 861763651183. The next prime is 861763651261. The reversal of 861763651204 is 402156367168.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670009 + ... + 1473919.

Almost surely, 2^861763651204 is an apocalyptic number.

It is an amenable number.

861763651204 is a deficient number, since it is larger than the sum of its proper divisors (687297597244).

861763651204 is a wasteful number, since it uses less digits than its factorization.

861763651204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811195 (or 811193 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 861763651204 in words is "eight hundred sixty-one billion, seven hundred sixty-three million, six hundred fifty-one thousand, two hundred four".