409321621140 has 192 divisors, whose sum is σ = 1260866476800. Its totient is φ = 98754453504.

The previous prime is 409321621117. The next prime is 409321621249. The reversal of 409321621140 is 41126123904.

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, 6743607 + ... + 6804033.

It is an arithmetic number, because the mean of its divisors is an integer number (6567012900).

Almost surely, 2^409321621140 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 409321621140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (630433238400).

409321621140 is an abundant number, since it is smaller than the sum of its proper divisors (851544855660).

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

409321621140 is a wasteful number, since it uses less digits than its factorization.

409321621140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60714 (or 60712 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 409321621140 in words is "four hundred nine billion, three hundred twenty-one million, six hundred twenty-one thousand, one hundred forty".