11057280705 has 64 divisors (see below), whose sum is σ = 20541726720. Its totient is φ = 5632659648.

The previous prime is 11057280691. The next prime is 11057280721. The reversal of 11057280705 is 50708275011.

11057280705 is a `hidden beast` number, since 1 + 1 + 0 + 572 + 80 + 7 + 0 + 5 = 666.

It is not a de Polignac number, because 11057280705 - 2⁵ = 11057280673 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11057280705.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2553252 + ... + 2557578.

It is an arithmetic number, because the mean of its divisors is an integer number (320964480).

Almost surely, 2^11057280705 is an apocalyptic number.

11057280705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11057280705 is a deficient number, since it is larger than the sum of its proper divisors (9484446015).

11057280705 is a wasteful number, since it uses less digits than its factorization.

11057280705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5187 (or 5181 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 36.

The spelling of 11057280705 in words is "eleven billion, fifty-seven million, two hundred eighty thousand, seven hundred five".