1491326424000 has 896 divisors, whose sum is σ = 6455072931840. Its totient is φ = 329868288000.

The previous prime is 1491326423963. The next prime is 1491326424011. The reversal of 1491326424000 is 4246231941.

1491326424000 is a `hidden beast` number, since 1 + 4 + 9 + 1 + 3 + 2 + 642 + 4 + 0 + 0 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 46856092 + ... + 46887908.

Almost surely, 2^{1491326424000} is an apocalyptic number.

1491326424000 is a gapful number since it is divisible by the number (10) 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 1491326424000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3227536465920).

1491326424000 is an abundant number, since it is smaller than the sum of its proper divisors (4963746507840).

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

1491326424000 is a wasteful number, since it uses less digits than its factorization.

1491326424000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31891 (or 31865 counting only the distinct ones).

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

The spelling of 1491326424000 in words is "one trillion, four hundred ninety-one billion, three hundred twenty-six million, four hundred twenty-four thousand".