402553540361 has 4 divisors (see below), whose sum is σ = 460061188992. Its totient is φ = 345045891732.

The previous prime is 402553540339. The next prime is 402553540393. The reversal of 402553540361 is 163045355204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402553540361 - 2³⁰ = 401479798537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402553540331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28753824305 + ... + 28753824318.

It is an arithmetic number, because the mean of its divisors is an integer number (115015297248).

Almost surely, 2^402553540361 is an apocalyptic number.

It is an amenable number.

402553540361 is a deficient number, since it is larger than the sum of its proper divisors (57507648631).

402553540361 is an equidigital number, since it uses as much as digits as its factorization.

402553540361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57507648630.

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 402553540361 its reverse (163045355204), we get a palindrome (565598895565).

The spelling of 402553540361 in words is "four hundred two billion, five hundred fifty-three million, five hundred forty thousand, three hundred sixty-one".