402321055513 has 4 divisors (see below), whose sum is σ = 433268829028. Its totient is φ = 371373282000.

The previous prime is 402321055427. The next prime is 402321055523. The reversal of 402321055513 is 315550123204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 261884992009 + 140436063504 = 511747^2 + 374748^2 .

It is a cyclic number.

It is not a de Polignac number, because 402321055513 - 2⁹ = 402321055001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402321055523) 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, 15473886738 + ... + 15473886763.

It is an arithmetic number, because the mean of its divisors is an integer number (108317207257).

Almost surely, 2^402321055513 is an apocalyptic number.

It is an amenable number.

402321055513 is a deficient number, since it is larger than the sum of its proper divisors (30947773515).

402321055513 is a wasteful number, since it uses less digits than its factorization.

402321055513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30947773514.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 402321055513 its reverse (315550123204), we get a palindrome (717871178717).

The spelling of 402321055513 in words is "four hundred two billion, three hundred twenty-one million, fifty-five thousand, five hundred thirteen".