11912603136 has 320 divisors, whose sum is σ = 37848577536. Its totient is φ = 3258777600.

The previous prime is 11912603119. The next prime is 11912603161. The reversal of 11912603136 is 63130621911.

It is a super-2 number, since 2×11912603136² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11912603097 and 11912603106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26890531 + ... + 26890973.

Almost surely, 2^11912603136 is an apocalyptic number.

11912603136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11912603136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18924288768).

11912603136 is an abundant number, since it is smaller than the sum of its proper divisors (25935974400).

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

11912603136 is an equidigital number, since it uses as much as digits as its factorization.

11912603136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The spelling of 11912603136 in words is "eleven billion, nine hundred twelve million, six hundred three thousand, one hundred thirty-six".