10505643515 has 16 divisors (see below), whose sum is σ = 12699529920. Its totient is φ = 8342814720.

The previous prime is 10505643497. The next prime is 10505643541. The reversal of 10505643515 is 51534650501.

It is not a de Polignac number, because 10505643515 - 2⁸ = 10505643259 is a prime.

It is a super-2 number, since 2×10505643515² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 633935 + ... + 650295.

It is an arithmetic number, because the mean of its divisors is an integer number (793720620).

Almost surely, 2^10505643515 is an apocalyptic number.

10505643515 is a deficient number, since it is larger than the sum of its proper divisors (2193886405).

10505643515 is a wasteful number, since it uses less digits than its factorization.

10505643515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17302.

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 10505643515 in words is "ten billion, five hundred five million, six hundred forty-three thousand, five hundred fifteen".