10505115203 has 4 divisors (see below), whose sum is σ = 11460125688. Its totient is φ = 9550104720.

The previous prime is 10505115169. The next prime is 10505115217. The reversal of 10505115203 is 30251150501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10505115203 - 2¹² = 10505111107 is a prime.

It is a super-2 number, since 2×10505115203² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10505115253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477505226 + ... + 477505247.

It is an arithmetic number, because the mean of its divisors is an integer number (2865031422).

Almost surely, 2^10505115203 is an apocalyptic number.

10505115203 is a deficient number, since it is larger than the sum of its proper divisors (955010485).

10505115203 is an equidigital number, since it uses as much as digits as its factorization.

10505115203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955010484.

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 10505115203 its reverse (30251150501), we get a palindrome (40756265704).

The spelling of 10505115203 in words is "ten billion, five hundred five million, one hundred fifteen thousand, two hundred three".