640310412502351 has 2 divisors, whose sum is σ = 640310412502352. Its totient is φ = 640310412502350.

The previous prime is 640310412502349. The next prime is 640310412502399. The reversal of 640310412502351 is 153205214013046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 640310412502351 - 2¹ = 640310412502349 is a prime.

Together with 640310412502349, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 640310412502351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (640310412502301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320155206251175 + 320155206251176.

It is an arithmetic number, because the mean of its divisors is an integer number (320155206251176).

Almost surely, 2^{640310412502351} is an apocalyptic number.

640310412502351 is a deficient number, since it is larger than the sum of its proper divisors (1).

640310412502351 is an equidigital number, since it uses as much as digits as its factorization.

640310412502351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 640310412502351 its reverse (153205214013046), we get a palindrome (793515626515397).

The spelling of 640310412502351 in words is "six hundred forty trillion, three hundred ten billion, four hundred twelve million, five hundred two thousand, three hundred fifty-one".