216303556707 has 64 divisors (see below), whose sum is σ = 368493235200. Its totient is φ = 122839960320.

The previous prime is 216303556691. The next prime is 216303556709. The reversal of 216303556707 is 707655303612.

216303556707 is a `hidden beast` number, since 2 + 1 + 630 + 3 + 5 + 5 + 6 + 7 + 0 + 7 = 666.

It is not a de Polignac number, because 216303556707 - 2⁴ = 216303556691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216303556709) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21079144 + ... + 21089402.

It is an arithmetic number, because the mean of its divisors is an integer number (5757706800).

Almost surely, 2^216303556707 is an apocalyptic number.

216303556707 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

216303556707 is a deficient number, since it is larger than the sum of its proper divisors (152189678493).

216303556707 is a wasteful number, since it uses less digits than its factorization.

216303556707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10953 (or 10947 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 45.

The spelling of 216303556707 in words is "two hundred sixteen billion, three hundred three million, five hundred fifty-six thousand, seven hundred seven".