400403340122032 has 80 divisors (see below), whose sum is σ = 837693596990880. Its totient is φ = 184307068108800.

The previous prime is 400403340121861. The next prime is 400403340122053. The reversal of 400403340122032 is 230221043304004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290827107 + ... + 292200637.

It is an arithmetic number, because the mean of its divisors is an integer number (10471169962386).

Almost surely, 2^{400403340122032} 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 400403340122032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418846798495440).

400403340122032 is an abundant number, since it is smaller than the sum of its proper divisors (437290256868848).

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

400403340122032 is a wasteful number, since it uses less digits than its factorization.

400403340122032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377302 (or 1377296 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 400403340122032 its reverse (230221043304004), we get a palindrome (630624383426036).

The spelling of 400403340122032 in words is "four hundred trillion, four hundred three billion, three hundred forty million, one hundred twenty-two thousand, thirty-two".