105515531503 has 2 divisors, whose sum is σ = 105515531504. Its totient is φ = 105515531502.

The previous prime is 105515531479. The next prime is 105515531519. The reversal of 105515531503 is 305135515501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105515531503 - 2²⁵ = 105481977071 is a prime.

It is a super-2 number, since 2×105515531503² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105515531573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52757765751 + 52757765752.

It is an arithmetic number, because the mean of its divisors is an integer number (52757765752).

Almost surely, 2^105515531503 is an apocalyptic number.

105515531503 is a deficient number, since it is larger than the sum of its proper divisors (1).

105515531503 is an equidigital number, since it uses as much as digits as its factorization.

105515531503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28125, while the sum is 34.

The spelling of 105515531503 in words is "one hundred five billion, five hundred fifteen million, five hundred thirty-one thousand, five hundred three".