11637666040 has 256 divisors, whose sum is σ = 36688619520. Its totient is φ = 3202467840.

The previous prime is 11637665947. The next prime is 11637666067. The reversal of 11637666040 is 4066673611.

11637666040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 11637665984 and 11637666002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 914602 + ... + 927238.

It is an arithmetic number, because the mean of its divisors is an integer number (143314920).

Almost surely, 2^11637666040 is an apocalyptic number.

11637666040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11637666040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18344309760).

11637666040 is an abundant number, since it is smaller than the sum of its proper divisors (25050953480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11637666040 is a wasteful number, since it uses less digits than its factorization.

11637666040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12702 (or 12698 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 11637666040 in words is "eleven billion, six hundred thirty-seven million, six hundred sixty-six thousand, forty".