11471385901 has 4 divisors (see below), whose sum is σ = 11473415100. Its totient is φ = 11469356704.

The previous prime is 11471385847. The next prime is 11471385971. The reversal of 11471385901 is 10958317411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1558196676 + 9913189225 = 39474^2 + 99565^2 .

It is a cyclic number.

It is not a de Polignac number, because 11471385901 - 2¹⁹ = 11470861613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11471385971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1006096 + ... + 1017433.

It is an arithmetic number, because the mean of its divisors is an integer number (2868353775).

Almost surely, 2^11471385901 is an apocalyptic number.

It is an amenable number.

11471385901 is a deficient number, since it is larger than the sum of its proper divisors (2029199).

11471385901 is an equidigital number, since it uses as much as digits as its factorization.

11471385901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029198.

The product of its (nonzero) digits is 30240, while the sum is 40.

The spelling of 11471385901 in words is "eleven billion, four hundred seventy-one million, three hundred eighty-five thousand, nine hundred one".