10505655550 has 24 divisors (see below), whose sum is σ = 21043637496. Its totient is φ = 3879011040.

The previous prime is 10505655533. The next prime is 10505655551. The reversal of 10505655550 is 5555650501.

It is a super-2 number, since 2×10505655550² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10505655551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8080624 + ... + 8081923.

It is an arithmetic number, because the mean of its divisors is an integer number (876818229).

Almost surely, 2^10505655550 is an apocalyptic number.

10505655550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10505655550 is an abundant number, since it is smaller than the sum of its proper divisors (10537981946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10505655550 is a wasteful number, since it uses less digits than its factorization.

10505655550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16162572 (or 16162567 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 37.

The spelling of 10505655550 in words is "ten billion, five hundred five million, six hundred fifty-five thousand, five hundred fifty".