11271807481 has 8 divisors (see below), whose sum is σ = 12306472704. Its totient is φ = 10238801520.

The previous prime is 11271807431. The next prime is 11271807523. The reversal of 11271807481 is 18470817211.

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

It is a cyclic number.

It is not a de Polignac number, because 11271807481 - 2¹⁵ = 11271774713 is a prime.

It is a super-2 number, since 2×11271807481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11271807401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400585 + ... + 427798.

It is an arithmetic number, because the mean of its divisors is an integer number (1538309088).

Almost surely, 2^11271807481 is an apocalyptic number.

11271807481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11271807481 is a deficient number, since it is larger than the sum of its proper divisors (1034665223).

11271807481 is a wasteful number, since it uses less digits than its factorization.

11271807481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829631.

The product of its (nonzero) digits is 25088, while the sum is 40.

The spelling of 11271807481 in words is "eleven billion, two hundred seventy-one million, eight hundred seven thousand, four hundred eighty-one".