216787545702 has 48 divisors (see below), whose sum is σ = 578100126240. Its totient is φ = 57174736896.

The previous prime is 216787545619. The next prime is 216787545781. The reversal of 216787545702 is 207545787612.

216787545702 is a `hidden beast` number, since 2 + 1 + 67 + 8 + 7 + 5 + 4 + 570 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66172827 + ... + 66176102.

It is an arithmetic number, because the mean of its divisors is an integer number (12043752630).

Almost surely, 2^216787545702 is an apocalyptic number.

216787545702 is an abundant number, since it is smaller than the sum of its proper divisors (361312580538).

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

216787545702 is a wasteful number, since it uses less digits than its factorization.

216787545702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132348957 (or 132348954 counting only the distinct ones).

The product of its (nonzero) digits is 6585600, while the sum is 54.

The spelling of 216787545702 in words is "two hundred sixteen billion, seven hundred eighty-seven million, five hundred forty-five thousand, seven hundred two".