402544211412321 has 16 divisors (see below), whose sum is σ = 650576503293120. Its totient is φ = 243966188734560.

The previous prime is 402544211412319. The next prime is 402544211412347. The reversal of 402544211412321 is 123214112445204.

402544211412321 is a `hidden beast` number, since 4 + 0 + 2 + 5 + 4 + 4 + 211 + 412 + 3 + 21 = 666.

It is not a de Polignac number, because 402544211412321 - 2¹ = 402544211412319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402544211412821) 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, 677683857300 + ... + 677683857893.

It is an arithmetic number, because the mean of its divisors is an integer number (40661031455820).

Almost surely, 2^{402544211412321} is an apocalyptic number.

It is an amenable number.

402544211412321 is a deficient number, since it is larger than the sum of its proper divisors (248032291880799).

402544211412321 is a wasteful number, since it uses less digits than its factorization.

402544211412321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355367715213 (or 1355367715207 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

Adding to 402544211412321 its reverse (123214112445204), we get a palindrome (525758323857525).

The spelling of 402544211412321 in words is "four hundred two trillion, five hundred forty-four billion, two hundred eleven million, four hundred twelve thousand, three hundred twenty-one".