861034828761 has 16 divisors (see below), whose sum is σ = 1280570616000. Its totient is φ = 571789661184.

The previous prime is 861034828747. The next prime is 861034828777. The reversal of 861034828761 is 167828430168.

861034828761 is a `hidden beast` number, since 8 + 6 + 10 + 348 + 287 + 6 + 1 = 666.

It is not a de Polignac number, because 861034828761 - 2⁵ = 861034828729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 861034828698 and 861034828707.

It is not an unprimeable number, because it can be changed into a prime (861034828711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62036211 + ... + 62050088.

It is an arithmetic number, because the mean of its divisors is an integer number (80035663500).

Almost surely, 2^861034828761 is an apocalyptic number.

It is an amenable number.

861034828761 is a deficient number, since it is larger than the sum of its proper divisors (419535787239).

861034828761 is a wasteful number, since it uses less digits than its factorization.

861034828761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124086565 (or 124086559 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 861034828761 in words is "eight hundred sixty-one billion, thirty-four million, eight hundred twenty-eight thousand, seven hundred sixty-one".