11057280681 has 4 divisors (see below), whose sum is σ = 14743040912. Its totient is φ = 7371520452.

The previous prime is 11057280673. The next prime is 11057280691. The reversal of 11057280681 is 18608275011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11057280681 - 2³ = 11057280673 is a prime.

It is a super-2 number, since 2×11057280681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11057280671) 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, 1842880111 + ... + 1842880116.

It is an arithmetic number, because the mean of its divisors is an integer number (3685760228).

Almost surely, 2^11057280681 is an apocalyptic number.

It is an amenable number.

11057280681 is a deficient number, since it is larger than the sum of its proper divisors (3685760231).

11057280681 is an equidigital number, since it uses as much as digits as its factorization.

11057280681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3685760230.

The product of its (nonzero) digits is 26880, while the sum is 39.

The spelling of 11057280681 in words is "eleven billion, fifty-seven million, two hundred eighty thousand, six hundred eighty-one".