10550621611 has 4 divisors (see below), whose sum is σ = 10551010000. Its totient is φ = 10550233224.

The previous prime is 10550621597. The next prime is 10550621659. The reversal of 10550621611 is 11612605501.

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 10550621611 - 2¹⁹ = 10550097323 is a prime.

It is a super-2 number, since 2×10550621611² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10550621611.

It is not an unprimeable number, because it can be changed into a prime (10550621681) 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, 150111 + ... + 208888.

It is an arithmetic number, because the mean of its divisors is an integer number (2637752500).

Almost surely, 2^10550621611 is an apocalyptic number.

10550621611 is a deficient number, since it is larger than the sum of its proper divisors (388389).

10550621611 is an equidigital number, since it uses as much as digits as its factorization.

10550621611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388388.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 10550621611 in words is "ten billion, five hundred fifty million, six hundred twenty-one thousand, six hundred eleven".