863553121140 has 96 divisors (see below), whose sum is σ = 2560869924480. Its totient is φ = 216676581376.

The previous prime is 863553121129. The next prime is 863553121159. The reversal of 863553121140 is 41121355368.

It is a congruent number.

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, 3742564 + ... + 3966596.

It is an arithmetic number, because the mean of its divisors is an integer number (26675728380).

Almost surely, 2^863553121140 is an apocalyptic number.

It is an amenable number.

863553121140 is an abundant number, since it is smaller than the sum of its proper divisors (1697316803340).

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

863553121140 is a wasteful number, since it uses less digits than its factorization.

863553121140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227841 (or 227839 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 863553121140 in words is "eight hundred sixty-three billion, five hundred fifty-three million, one hundred twenty-one thousand, one hundred forty".