6642345371 has 2 divisors, whose sum is σ = 6642345372. Its totient is φ = 6642345370.

The previous prime is 6642345319. The next prime is 6642345373. The reversal of 6642345371 is 1735432466.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6642345371 is a prime.

Together with 6642345373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6642345373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3321172685 + 3321172686.

It is an arithmetic number, because the mean of its divisors is an integer number (3321172686).

Almost surely, 2^6642345371 is an apocalyptic number.

6642345371 is a deficient number, since it is larger than the sum of its proper divisors (1).

6642345371 is an equidigital number, since it uses as much as digits as its factorization.

6642345371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 41.

The square root of 6642345371 is about 81500.5850960593. The cubic root of 6642345371 is about 1879.7805473245.

The spelling of 6642345371 in words is "six billion, six hundred forty-two million, three hundred forty-five thousand, three hundred seventy-one".