11894123536 has 10 divisors (see below), whose sum is σ = 23044864382. Its totient is φ = 5947061760.

The previous prime is 11894123503. The next prime is 11894123551. The reversal of 11894123536 is 63532149811.

It can be written as a sum of positive squares in only one way, i.e., 11437019136 + 457104400 = 106944^2 + 21380^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11894123492 and 11894123501.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371691345 + ... + 371691376.

Almost surely, 2^11894123536 is an apocalyptic number.

11894123536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11894123536 is a deficient number, since it is larger than the sum of its proper divisors (11150740846).

11894123536 is an equidigital number, since it uses as much as digits as its factorization.

11894123536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743382729 (or 743382723 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The spelling of 11894123536 in words is "eleven billion, eight hundred ninety-four million, one hundred twenty-three thousand, five hundred thirty-six".