215288152447 has 2 divisors, whose sum is σ = 215288152448. Its totient is φ = 215288152446.

The previous prime is 215288152423. The next prime is 215288152459. The reversal of 215288152447 is 744251882512.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215288152447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215288152447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215288152477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107644076223 + 107644076224.

It is an arithmetic number, because the mean of its divisors is an integer number (107644076224).

Almost surely, 2^215288152447 is an apocalyptic number.

215288152447 is a deficient number, since it is larger than the sum of its proper divisors (1).

215288152447 is an equidigital number, since it uses as much as digits as its factorization.

215288152447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1433600, while the sum is 49.

The spelling of 215288152447 in words is "two hundred fifteen billion, two hundred eighty-eight million, one hundred fifty-two thousand, four hundred forty-seven".