11051555643 has 12 divisors (see below), whose sum is σ = 16121412528. Its totient is φ = 7294755600.

The previous prime is 11051555633. The next prime is 11051555657. The reversal of 11051555643 is 34655515011.

11051555643 is a `hidden beast` number, since 1 + 1 + 0 + 5 + 1 + 5 + 5 + 5 + 643 = 666.

It is not a de Polignac number, because 11051555643 - 2⁶ = 11051555579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11051555598 and 11051555607.

It is not an unprimeable number, because it can be changed into a prime (11051555633) 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 11 ways as a sum of consecutive naturals, for example, 6078055 + ... + 6079872.

It is an arithmetic number, because the mean of its divisors is an integer number (1343451044).

Almost surely, 2^11051555643 is an apocalyptic number.

11051555643 is a deficient number, since it is larger than the sum of its proper divisors (5069856885).

11051555643 is a wasteful number, since it uses less digits than its factorization.

11051555643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12158034 (or 12158031 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 11051555643 in words is "eleven billion, fifty-one million, five hundred fifty-five thousand, six hundred forty-three".