216261260334 has 24 divisors (see below), whose sum is σ = 535504073520. Its totient is φ = 61788931488.

The previous prime is 216261260329. The next prime is 216261260351. The reversal of 216261260334 is 433062162612.

216261260334 is a `hidden beast` number, since 2 + 1 + 6 + 2 + 6 + 12 + 603 + 34 = 666.

216261260334 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 858179479 + ... + 858179730.

It is an arithmetic number, because the mean of its divisors is an integer number (22312669730).

Almost surely, 2^216261260334 is an apocalyptic number.

216261260334 is an abundant number, since it is smaller than the sum of its proper divisors (319242813186).

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

216261260334 is a wasteful number, since it uses less digits than its factorization.

216261260334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716359224 (or 1716359221 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 216261260334 in words is "two hundred sixteen billion, two hundred sixty-one million, two hundred sixty thousand, three hundred thirty-four".