11423975688 has 48 divisors (see below), whose sum is σ = 30950934300. Its totient is φ = 3806638080.

The previous prime is 11423975677. The next prime is 11423975699. The reversal of 11423975688 is 88657932411.

11423975688 is a `hidden beast` number, since 1 + 1 + 42 + 39 + 7 + 568 + 8 = 666.

It is a Cunningham number, because it is equal to 106883²-1.

It is an interprime number because it is at equal distance from previous prime (11423975677) and next prime (11423975699).

It can be written as a sum of positive squares in 2 ways, for example, as 10592114724 + 831860964 = 102918^2 + 28842^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187048 + ... + 240488.

Almost surely, 2^11423975688 is an apocalyptic number.

11423975688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11423975688 is an abundant number, since it is smaller than the sum of its proper divisors (19526958612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11423975688 is a wasteful number, since it uses less digits than its factorization.

11423975688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56422 (or 56415 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 11423975688 in words is "eleven billion, four hundred twenty-three million, nine hundred seventy-five thousand, six hundred eighty-eight".