11421193536 has 448 divisors, whose sum is σ = 36950538240. Its totient is φ = 3448811520.

The previous prime is 11421193519. The next prime is 11421193549. The reversal of 11421193536 is 63539112411.

11421193536 is a `hidden beast` number, since 1 + 1 + 4 + 2 + 119 + 3 + 536 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11421193536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 70068591 + ... + 70068753.

It is an arithmetic number, because the mean of its divisors is an integer number (82478880).

Almost surely, 2^11421193536 is an apocalyptic number.

11421193536 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 11421193536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18475269120).

11421193536 is an abundant number, since it is smaller than the sum of its proper divisors (25529344704).

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

11421193536 is a wasteful number, since it uses less digits than its factorization.

11421193536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 275 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The spelling of 11421193536 in words is "eleven billion, four hundred twenty-one million, one hundred ninety-three thousand, five hundred thirty-six".