4537721316656 has 40 divisors (see below), whose sum is σ = 9591323241024. Its totient is φ = 2062551037760.

The previous prime is 4537721316647. The next prime is 4537721316743. The reversal of 4537721316656 is 6566131277354.

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 7 ways as a sum of consecutive naturals, for example, 7609271 + ... + 8183913.

Almost surely, 2^{4537721316656} is an apocalyptic number.

It is an amenable number.

4537721316656 is an abundant number, since it is smaller than the sum of its proper divisors (5053601924368).

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

4537721316656 is a wasteful number, since it uses less digits than its factorization.

4537721316656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619529 (or 619523 counting only the distinct ones).

The product of its digits is 19051200, while the sum is 56.

The spelling of 4537721316656 in words is "four trillion, five hundred thirty-seven billion, seven hundred twenty-one million, three hundred sixteen thousand, six hundred fifty-six".