861200883810 has 32 divisors (see below), whose sum is σ = 2296535690880. Its totient is φ = 229653568944.

The previous prime is 861200883799. The next prime is 861200883889. The reversal of 861200883810 is 18388002168.

861200883810 is a `hidden beast` number, since 8 + 61 + 200 + 8 + 8 + 381 + 0 = 666.

It is a super-2 number, since 2×861200883810² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1594816182 + ... + 1594816721.

It is an arithmetic number, because the mean of its divisors is an integer number (71766740340).

Almost surely, 2^861200883810 is an apocalyptic number.

861200883810 is an abundant number, since it is smaller than the sum of its proper divisors (1435334807070).

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

861200883810 is a wasteful number, since it uses less digits than its factorization.

861200883810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189632919 (or 3189632913 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

Adding to 861200883810 its reverse (18388002168), we get a palindrome (879588885978).

The spelling of 861200883810 in words is "eight hundred sixty-one billion, two hundred million, eight hundred eighty-three thousand, eight hundred ten".