4561863656 has 16 divisors (see below), whose sum is σ = 9775422240. Its totient is φ = 1955084400.

The previous prime is 4561863643. The next prime is 4561863661. The reversal of 4561863656 is 6563681654.

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, 40730870 + ... + 40730981.

It is an arithmetic number, because the mean of its divisors is an integer number (610963890).

Almost surely, 2^4561863656 is an apocalyptic number.

It is an amenable number.

4561863656 is an abundant number, since it is smaller than the sum of its proper divisors (5213558584).

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

4561863656 is a wasteful number, since it uses less digits than its factorization.

4561863656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81461864 (or 81461860 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 50.

The square root of 4561863656 is about 67541.5698366569. The cubic root of 4561863656 is about 1658.4947471568.

The spelling of 4561863656 in words is "four billion, five hundred sixty-one million, eight hundred sixty-three thousand, six hundred fifty-six".