10505655551 has 2 divisors, whose sum is σ = 10505655552. Its totient is φ = 10505655550.

The previous prime is 10505655533. The next prime is 10505655571. The reversal of 10505655551 is 15555650501.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10505655551 - 2⁶ = 10505655487 is a prime.

It is a super-2 number, since 2×10505655551² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10505655571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5252827775 + 5252827776.

It is an arithmetic number, because the mean of its divisors is an integer number (5252827776).

Almost surely, 2^10505655551 is an apocalyptic number.

10505655551 is a deficient number, since it is larger than the sum of its proper divisors (1).

10505655551 is an equidigital number, since it uses as much as digits as its factorization.

10505655551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 10505655551 in words is "ten billion, five hundred five million, six hundred fifty-five thousand, five hundred fifty-one".