11810282640 has 80 divisors (see below), whose sum is σ = 39428184768. Its totient is φ = 2907145728.

The previous prime is 11810282609. The next prime is 11810282641. The reversal of 11810282640 is 4628201811.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (11810282641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1889554 + ... + 1895793.

Almost surely, 2^11810282640 is an apocalyptic number.

11810282640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11810282640 is an abundant number, since it is smaller than the sum of its proper divisors (27617902128).

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

11810282640 is a wasteful number, since it uses less digits than its factorization.

11810282640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3785376 (or 3785370 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The spelling of 11810282640 in words is "eleven billion, eight hundred ten million, two hundred eighty-two thousand, six hundred forty".