322787040400 has 480 divisors, whose sum is σ = 927062092800. Its totient is φ = 106686720000.

The previous prime is 322787040377. The next prime is 322787040409. The reversal of 322787040400 is 4040787223.

It is a self number, because there is not a number n which added to its sum of digits gives 322787040400.

It is not an unprimeable number, because it can be changed into a prime (322787040409) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 511548085 + ... + 511548715.

It is an arithmetic number, because the mean of its divisors is an integer number (1931379360).

Almost surely, 2^322787040400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 322787040400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463531046400).

322787040400 is an abundant number, since it is smaller than the sum of its proper divisors (604275052400).

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

322787040400 is a wasteful number, since it uses less digits than its factorization.

322787040400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919 (or 908 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The spelling of 322787040400 in words is "three hundred twenty-two billion, seven hundred eighty-seven million, forty thousand, four hundred".