220634715550387 has 2 divisors, whose sum is σ = 220634715550388. Its totient is φ = 220634715550386.

The previous prime is 220634715550339. The next prime is 220634715550393. The reversal of 220634715550387 is 783055517436022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220634715550387 is a prime.

It is not a weakly prime, because it can be changed into another prime (220634715554387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110317357775193 + 110317357775194.

It is an arithmetic number, because the mean of its divisors is an integer number (110317357775194).

Almost surely, 2^{220634715550387} is an apocalyptic number.

220634715550387 is a deficient number, since it is larger than the sum of its proper divisors (1).

220634715550387 is an equidigital number, since it uses as much as digits as its factorization.

220634715550387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336000, while the sum is 58.

The spelling of 220634715550387 in words is "two hundred twenty trillion, six hundred thirty-four billion, seven hundred fifteen million, five hundred fifty thousand, three hundred eighty-seven".