11581668290 has 16 divisors (see below), whose sum is σ = 20985065280. Its totient is φ = 4601986800.

The previous prime is 11581668281. The next prime is 11581668313. The reversal of 11581668290 is 9286618511.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3833480 + ... + 3836499.

It is an arithmetic number, because the mean of its divisors is an integer number (1311566580).

Almost surely, 2^11581668290 is an apocalyptic number.

11581668290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11581668290 is a deficient number, since it is larger than the sum of its proper divisors (9403396990).

11581668290 is a wasteful number, since it uses less digits than its factorization.

11581668290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7670137.

The product of its (nonzero) digits is 207360, while the sum is 47.

The spelling of 11581668290 in words is "eleven billion, five hundred eighty-one million, six hundred sixty-eight thousand, two hundred ninety".