15217082885623 has 2 divisors, whose sum is σ = 15217082885624. Its totient is φ = 15217082885622.

The previous prime is 15217082885593. The next prime is 15217082885633. The reversal of 15217082885623 is 32658828071251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15217082885623 - 2⁵ = 15217082885591 is a prime.

It is a super-2 number, since 2×15217082885623² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15217082885633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7608541442811 + 7608541442812.

It is an arithmetic number, because the mean of its divisors is an integer number (7608541442812).

Almost surely, 2^{15217082885623} is an apocalyptic number.

15217082885623 is a deficient number, since it is larger than the sum of its proper divisors (1).

15217082885623 is an equidigital number, since it uses as much as digits as its factorization.

15217082885623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12902400, while the sum is 58.

The spelling of 15217082885623 in words is "fifteen trillion, two hundred seventeen billion, eighty-two million, eight hundred eighty-five thousand, six hundred twenty-three".