11663724471 has 16 divisors (see below), whose sum is σ = 17793360384. Its totient is φ = 6657460704.

The previous prime is 11663724451. The next prime is 11663724473. The reversal of 11663724471 is 17442736611.

It is not a de Polignac number, because 11663724471 - 2⁷ = 11663724343 is a prime.

It is a super-3 number, since 3×11663724471³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11663724473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294460 + ... + 331713.

It is an arithmetic number, because the mean of its divisors is an integer number (1112085024).

Almost surely, 2^11663724471 is an apocalyptic number.

11663724471 is a deficient number, since it is larger than the sum of its proper divisors (6129635913).

11663724471 is an equidigital number, since it uses as much as digits as its factorization.

11663724471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627070.

The product of its digits is 169344, while the sum is 42.

The spelling of 11663724471 in words is "eleven billion, six hundred sixty-three million, seven hundred twenty-four thousand, four hundred seventy-one".