11261607687 has 64 divisors (see below), whose sum is σ = 19379243520. Its totient is φ = 6387724800.

The previous prime is 11261607673. The next prime is 11261607689. The reversal of 11261607687 is 78670616211.

11261607687 is a `hidden beast` number, since 11 + 26 + 1 + 607 + 6 + 8 + 7 = 666.

It is not a de Polignac number, because 11261607687 - 2¹⁶ = 11261542151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11261607689) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 907708 + ... + 920030.

It is an arithmetic number, because the mean of its divisors is an integer number (302800680).

Almost surely, 2^11261607687 is an apocalyptic number.

11261607687 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11261607687 is a deficient number, since it is larger than the sum of its proper divisors (8117635833).

11261607687 is a wasteful number, since it uses less digits than its factorization.

11261607687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12541 (or 12535 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 11261607687 in words is "eleven billion, two hundred sixty-one million, six hundred seven thousand, six hundred eighty-seven".