641352713987 has 2 divisors, whose sum is σ = 641352713988. Its totient is φ = 641352713986.

The previous prime is 641352713951. The next prime is 641352714031. The reversal of 641352713987 is 789317253146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 641352713987 - 2¹² = 641352709891 is a prime.

It is a super-2 number, since 2×641352713987² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (641352713887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320676356993 + 320676356994.

It is an arithmetic number, because the mean of its divisors is an integer number (320676356994).

Almost surely, 2^641352713987 is an apocalyptic number.

641352713987 is a deficient number, since it is larger than the sum of its proper divisors (1).

641352713987 is an equidigital number, since it uses as much as digits as its factorization.

641352713987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 56.

The spelling of 641352713987 in words is "six hundred forty-one billion, three hundred fifty-two million, seven hundred thirteen thousand, nine hundred eighty-seven".