216694669065 has 96 divisors (see below), whose sum is σ = 418428518400. Its totient is φ = 95381193600.

The previous prime is 216694668991. The next prime is 216694669069. The reversal of 216694669065 is 560966496612.

It is not a de Polignac number, because 216694669065 - 2¹³ = 216694660873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216694669069) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4510320 + ... + 4558110.

It is an arithmetic number, because the mean of its divisors is an integer number (4358630400).

Almost surely, 2^216694669065 is an apocalyptic number.

It is an amenable number.

216694669065 is a deficient number, since it is larger than the sum of its proper divisors (201733849335).

216694669065 is a wasteful number, since it uses less digits than its factorization.

216694669065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48043 (or 48036 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 60.

The spelling of 216694669065 in words is "two hundred sixteen billion, six hundred ninety-four million, six hundred sixty-nine thousand, sixty-five".