11521740806 has 8 divisors (see below), whose sum is σ = 17310806544. Its totient is φ = 5751471960.

The previous prime is 11521740799. The next prime is 11521740821. The reversal of 11521740806 is 60804712511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11521740806² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4697690 + ... + 4700141.

It is an arithmetic number, because the mean of its divisors is an integer number (2163850818).

Almost surely, 2^11521740806 is an apocalyptic number.

11521740806 is a deficient number, since it is larger than the sum of its proper divisors (5789065738).

11521740806 is an equidigital number, since it uses as much as digits as its factorization.

11521740806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9398446.

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 11521740806 in words is "eleven billion, five hundred twenty-one million, seven hundred forty thousand, eight hundred six".