10505055551 has 16 divisors (see below), whose sum is σ = 10831518720. Its totient is φ = 10184359200.

The previous prime is 10505055499. The next prime is 10505055553. The reversal of 10505055551 is 15555050501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10505055551 is a prime.

It is a super-2 number, since 2×10505055551² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10505055553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1563866 + ... + 1570568.

It is an arithmetic number, because the mean of its divisors is an integer number (676969920).

Almost surely, 2^10505055551 is an apocalyptic number.

10505055551 is a deficient number, since it is larger than the sum of its proper divisors (326463169).

10505055551 is a wasteful number, since it uses less digits than its factorization.

10505055551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7126.

The product of its (nonzero) digits is 15625, while the sum is 32.

The spelling of 10505055551 in words is "ten billion, five hundred five million, fifty-five thousand, five hundred fifty-one".