216157514647 has 2 divisors, whose sum is σ = 216157514648. Its totient is φ = 216157514646.

The previous prime is 216157514621. The next prime is 216157514659. The reversal of 216157514647 is 746415751612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216157514647 is a prime.

It is a super-2 number, since 2×216157514647² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216157514647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216157514047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108078757323 + 108078757324.

It is an arithmetic number, because the mean of its divisors is an integer number (108078757324).

Almost surely, 2^216157514647 is an apocalyptic number.

216157514647 is a deficient number, since it is larger than the sum of its proper divisors (1).

216157514647 is an equidigital number, since it uses as much as digits as its factorization.

216157514647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 49.

The spelling of 216157514647 in words is "two hundred sixteen billion, one hundred fifty-seven million, five hundred fourteen thousand, six hundred forty-seven".