11903523136 has 14 divisors (see below), whose sum is σ = 23621053850. Its totient is φ = 5951761536.

The previous prime is 11903523113. The next prime is 11903523143. The reversal of 11903523136 is 63132530911.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10845972736 + 1057550400 = 104144^2 + 32520^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92996211 + ... + 92996338.

Almost surely, 2^11903523136 is an apocalyptic number.

11903523136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11903523136 is a deficient number, since it is larger than the sum of its proper divisors (11717530714).

11903523136 is an equidigital number, since it uses as much as digits as its factorization.

11903523136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185992561 (or 185992551 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 34.

The spelling of 11903523136 in words is "eleven billion, nine hundred three million, five hundred twenty-three thousand, one hundred thirty-six".