216531747159 has 32 divisors (see below), whose sum is σ = 367587064320. Its totient is φ = 110276111232.

The previous prime is 216531747137. The next prime is 216531747181. The reversal of 216531747159 is 951747135612.

It is an interprime number because it is at equal distance from previous prime (216531747137) and next prime (216531747181).

It is not a de Polignac number, because 216531747159 - 2¹⁶ = 216531681623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216531747119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13667197 + ... + 13683030.

It is an arithmetic number, because the mean of its divisors is an integer number (11487095760).

Almost surely, 2^216531747159 is an apocalyptic number.

216531747159 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

216531747159 is a deficient number, since it is larger than the sum of its proper divisors (151055317161).

216531747159 is a wasteful number, since it uses less digits than its factorization.

216531747159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27350279.

The product of its digits is 1587600, while the sum is 51.

The spelling of 216531747159 in words is "two hundred sixteen billion, five hundred thirty-one million, seven hundred forty-seven thousand, one hundred fifty-nine".