868121381292 has 48 divisors (see below), whose sum is σ = 2212737875712. Its totient is φ = 262712994880.

The previous prime is 868121381273. The next prime is 868121381317. The reversal of 868121381292 is 292183121868.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4327683 + ... + 4523834.

It is an arithmetic number, because the mean of its divisors is an integer number (46098705744).

Almost surely, 2^868121381292 is an apocalyptic number.

It is an amenable number.

868121381292 is an abundant number, since it is smaller than the sum of its proper divisors (1344616494420).

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

868121381292 is a wasteful number, since it uses less digits than its factorization.

868121381292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8852278 (or 8852276 counting only the distinct ones).

The product of its digits is 663552, while the sum is 51.

The spelling of 868121381292 in words is "eight hundred sixty-eight billion, one hundred twenty-one million, three hundred eighty-one thousand, two hundred ninety-two".