400521352411 has 16 divisors (see below), whose sum is σ = 410226537600. Its totient is φ = 390928019328.

The previous prime is 400521352391. The next prime is 400521352417. The reversal of 400521352411 is 114253125004.

It is a cyclic number.

It is not a de Polignac number, because 400521352411 - 2²¹ = 400519255259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400521352411.

It is not an unprimeable number, because it can be changed into a prime (400521352417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31935780 + ... + 31948318.

It is an arithmetic number, because the mean of its divisors is an integer number (25639158600).

Almost surely, 2^400521352411 is an apocalyptic number.

400521352411 is a deficient number, since it is larger than the sum of its proper divisors (9705185189).

400521352411 is a wasteful number, since it uses less digits than its factorization.

400521352411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16938.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 400521352411 its reverse (114253125004), we get a palindrome (514774477415).

The spelling of 400521352411 in words is "four hundred billion, five hundred twenty-one million, three hundred fifty-two thousand, four hundred eleven".