402471897313 has 4 divisors (see below), whose sum is σ = 426146714820. Its totient is φ = 378797079808.

The previous prime is 402471897301. The next prime is 402471897349. The reversal of 402471897313 is 313798174204.

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 113122577569 + 289349319744 = 336337^2 + 537912^2 .

It is a cyclic number.

It is not a de Polignac number, because 402471897313 - 2²⁹ = 401935026401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402471895313) 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, 11837408728 + ... + 11837408761.

It is an arithmetic number, because the mean of its divisors is an integer number (106536678705).

Almost surely, 2^402471897313 is an apocalyptic number.

It is an amenable number.

402471897313 is a deficient number, since it is larger than the sum of its proper divisors (23674817507).

402471897313 is a wasteful number, since it uses less digits than its factorization.

402471897313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23674817506.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 402471897313 in words is "four hundred two billion, four hundred seventy-one million, eight hundred ninety-seven thousand, three hundred thirteen".