11012635681 has 16 divisors (see below), whose sum is σ = 11550420864. Its totient is φ = 10479896064.

The previous prime is 11012635663. The next prime is 11012635691. The reversal of 11012635681 is 18653621011.

It is a cyclic number.

It is not a de Polignac number, because 11012635681 - 2⁹ = 11012635169 is a prime.

It is a super-2 number, since 2×11012635681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11012635661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6488625 + ... + 6490321.

It is an arithmetic number, because the mean of its divisors is an integer number (721901304).

Almost surely, 2^11012635681 is an apocalyptic number.

It is an amenable number.

11012635681 is a deficient number, since it is larger than the sum of its proper divisors (537785183).

11012635681 is a wasteful number, since it uses less digits than its factorization.

11012635681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000.

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 11012635681 in words is "eleven billion, twelve million, six hundred thirty-five thousand, six hundred eighty-one".