861259927752 has 48 divisors (see below), whose sum is σ = 2665804539840. Its totient is φ = 246074264928.

The previous prime is 861259927727. The next prime is 861259927757. The reversal of 861259927752 is 257729952168.

861259927752 is a `hidden beast` number, since 8 + 6 + 12 + 599 + 27 + 7 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 861259927752.

It is not an unprimeable number, because it can be changed into a prime (861259927757) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 854424028 + ... + 854425035.

It is an arithmetic number, because the mean of its divisors is an integer number (55537594580).

Almost surely, 2^861259927752 is an apocalyptic number.

It is an amenable number.

861259927752 is an abundant number, since it is smaller than the sum of its proper divisors (1804544612088).

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

861259927752 is a wasteful number, since it uses less digits than its factorization.

861259927752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708849082 (or 1708849075 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 63.

The spelling of 861259927752 in words is "eight hundred sixty-one billion, two hundred fifty-nine million, nine hundred twenty-seven thousand, seven hundred fifty-two".