11991470601 has 16 divisors (see below), whose sum is σ = 18200494080. Its totient is φ = 6951576720.

The previous prime is 11991470597. The next prime is 11991470609. The reversal of 11991470601 is 10607419911.

11991470601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11991470601 - 2² = 11991470597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11991470601.

It is not an unprimeable number, because it can be changed into a prime (11991470609) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7898761 + ... + 7900278.

It is an arithmetic number, because the mean of its divisors is an integer number (1137530880).

Almost surely, 2^11991470601 is an apocalyptic number.

11991470601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11991470601 is a deficient number, since it is larger than the sum of its proper divisors (6209023479).

11991470601 is a wasteful number, since it uses less digits than its factorization.

11991470601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15799076.

The product of its (nonzero) digits is 13608, while the sum is 39.

The spelling of 11991470601 in words is "eleven billion, nine hundred ninety-one million, four hundred seventy thousand, six hundred one".