11231646426 has 144 divisors (see below), whose sum is σ = 33257716128. Its totient is φ = 2692872000.

The previous prime is 11231646409. The next prime is 11231646443. The reversal of 11231646426 is 62464613211.

11231646426 is a `hidden beast` number, since 1 + 1 + 2 + 3 + 1 + 6 + 4 + 642 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (11231646409) and next prime (11231646443).

It is a super-2 number, since 2×11231646426² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 81601 + ... + 170651.

It is an arithmetic number, because the mean of its divisors is an integer number (230956362).

Almost surely, 2^11231646426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11231646426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16628858064).

11231646426 is an abundant number, since it is smaller than the sum of its proper divisors (22026069702).

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

11231646426 is a wasteful number, since it uses less digits than its factorization.

11231646426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89097 (or 89087 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The spelling of 11231646426 in words is "eleven billion, two hundred thirty-one million, six hundred forty-six thousand, four hundred twenty-six".