866153253883852 has 96 divisors (see below), whose sum is σ = 1755081394940160. Its totient is φ = 372963134966400.

The previous prime is 866153253883837. The next prime is 866153253883873. The reversal of 866153253883852 is 258388352351668.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1819254952 + ... + 1819730992.

It is an arithmetic number, because the mean of its divisors is an integer number (18282097863960).

Almost surely, 2^{866153253883852} is an apocalyptic number.

It is an amenable number.

866153253883852 is an abundant number, since it is smaller than the sum of its proper divisors (888928141056308).

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

866153253883852 is a wasteful number, since it uses less digits than its factorization.

866153253883852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494084 (or 494060 counting only the distinct ones).

The product of its digits is 1990656000, while the sum is 73.

The spelling of 866153253883852 in words is "eight hundred sixty-six trillion, one hundred fifty-three billion, two hundred fifty-three million, eight hundred eighty-three thousand, eight hundred fifty-two".