6403532251271 has 2 divisors, whose sum is σ = 6403532251272. Its totient is φ = 6403532251270.

The previous prime is 6403532251183. The next prime is 6403532251273. The reversal of 6403532251271 is 1721522353046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6403532251271 - 2²² = 6403528056967 is a prime.

It is a super-2 number, since 2×6403532251271² (a number of 26 digits) contains 22 as substring.

Together with 6403532251273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6403532251273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3201766125635 + 3201766125636.

It is an arithmetic number, because the mean of its divisors is an integer number (3201766125636).

Almost surely, 2^{6403532251271} is an apocalyptic number.

6403532251271 is a deficient number, since it is larger than the sum of its proper divisors (1).

6403532251271 is an equidigital number, since it uses as much as digits as its factorization.

6403532251271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 6403532251271 in words is "six trillion, four hundred three billion, five hundred thirty-two million, two hundred fifty-one thousand, two hundred seventy-one".