643151151371 has 2 divisors, whose sum is σ = 643151151372. Its totient is φ = 643151151370.

The previous prime is 643151151337. The next prime is 643151151389. The reversal of 643151151371 is 173151151346.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-643151151371 is a prime.

It is not a weakly prime, because it can be changed into another prime (643151151311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321575575685 + 321575575686.

It is an arithmetic number, because the mean of its divisors is an integer number (321575575686).

Almost surely, 2^643151151371 is an apocalyptic number.

643151151371 is a deficient number, since it is larger than the sum of its proper divisors (1).

643151151371 is an equidigital number, since it uses as much as digits as its factorization.

643151151371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 38.

The spelling of 643151151371 in words is "six hundred forty-three billion, one hundred fifty-one million, one hundred fifty-one thousand, three hundred seventy-one".