400525005341320 has 128 divisors (see below), whose sum is σ = 942381266595840. Its totient is φ = 153052237808640.

The previous prime is 400525005341317. The next prime is 400525005341333. The reversal of 400525005341320 is 23143500525004.

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 31 ways as a sum of consecutive naturals, for example, 46887609 + ... + 54767671.

It is an arithmetic number, because the mean of its divisors is an integer number (7362353645280).

Almost surely, 2^{400525005341320} is an apocalyptic number.

400525005341320 is a gapful number since it is divisible by the number (40) 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 400525005341320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471190633297920).

400525005341320 is an abundant number, since it is smaller than the sum of its proper divisors (541856261254520).

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

400525005341320 is a wasteful number, since it uses less digits than its factorization.

400525005341320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7880735 (or 7880731 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 400525005341320 its reverse (23143500525004), we get a palindrome (423668505866324).

The spelling of 400525005341320 in words is "four hundred trillion, five hundred twenty-five billion, five million, three hundred forty-one thousand, three hundred twenty".