861126860752 has 20 divisors (see below), whose sum is σ = 1707234068320. Its totient is φ = 420550327008.

The previous prime is 861126860729. The next prime is 861126860767. The reversal of 861126860752 is 257068621168.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 861126860752.

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, 625818252 + ... + 625819627.

It is an arithmetic number, because the mean of its divisors is an integer number (85361703416).

Almost surely, 2^861126860752 is an apocalyptic number.

It is an amenable number.

861126860752 is a deficient number, since it is larger than the sum of its proper divisors (846107207568).

861126860752 is a wasteful number, since it uses less digits than its factorization.

861126860752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251637930 (or 1251637924 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 861126860752 in words is "eight hundred sixty-one billion, one hundred twenty-six million, eight hundred sixty thousand, seven hundred fifty-two".