402071427817 has 4 divisors (see below), whose sum is σ = 408886197840. Its totient is φ = 395256657796.

The previous prime is 402071427811. The next prime is 402071427827. The reversal of 402071427817 is 718724170204.

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 402071427817 - 2⁷ = 402071427689 is a prime.

It is a super-3 number, since 3×402071427817³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402071427811) 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, 3407384923 + ... + 3407385040.

It is an arithmetic number, because the mean of its divisors is an integer number (102221549460).

Almost surely, 2^402071427817 is an apocalyptic number.

It is an amenable number.

402071427817 is a deficient number, since it is larger than the sum of its proper divisors (6814770023).

402071427817 is an equidigital number, since it uses as much as digits as its factorization.

402071427817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6814770022.

The product of its (nonzero) digits is 175616, while the sum is 43.

The spelling of 402071427817 in words is "four hundred two billion, seventy-one million, four hundred twenty-seven thousand, eight hundred seventeen".