421316635213 has 4 divisors (see below), whose sum is σ = 431592650748. Its totient is φ = 411040619680.

The previous prime is 421316635199. The next prime is 421316635241. The reversal of 421316635213 is 312536613124.

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 38479922569 + 382836712644 = 196163^2 + 618738^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421316635213 is a prime.

It is a super-2 number, since 2×421316635213² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421316635253) 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, 5138007706 + ... + 5138007787.

It is an arithmetic number, because the mean of its divisors is an integer number (107898162687).

Almost surely, 2^421316635213 is an apocalyptic number.

It is an amenable number.

421316635213 is a deficient number, since it is larger than the sum of its proper divisors (10276015535).

421316635213 is a wasteful number, since it uses less digits than its factorization.

421316635213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10276015534.

The product of its digits is 77760, while the sum is 37.

The spelling of 421316635213 in words is "four hundred twenty-one billion, three hundred sixteen million, six hundred thirty-five thousand, two hundred thirteen".