63857245144 has 64 divisors (see below), whose sum is σ = 152917632000. Its totient is φ = 24272620800.

The previous prime is 63857245139. The next prime is 63857245157. The reversal of 63857245144 is 44154275836.

It is a congruent 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, 1238944 + ... + 1289455.

It is an arithmetic number, because the mean of its divisors is an integer number (2389338000).

Almost surely, 2^63857245144 is an apocalyptic number.

It is an amenable number.

63857245144 is an abundant number, since it is smaller than the sum of its proper divisors (89060386856).

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

63857245144 is a wasteful number, since it uses less digits than its factorization.

63857245144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528464 (or 2528460 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 49.

The spelling of 63857245144 in words is "sixty-three billion, eight hundred fifty-seven million, two hundred forty-five thousand, one hundred forty-four".