64380001571 has 2 divisors, whose sum is σ = 64380001572. Its totient is φ = 64380001570.

The previous prime is 64380001541. The next prime is 64380001573. The reversal of 64380001571 is 17510008346.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64380001571 is a prime.

Together with 64380001573, 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 (64380001573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32190000785 + 32190000786.

It is an arithmetic number, because the mean of its divisors is an integer number (32190000786).

Almost surely, 2^64380001571 is an apocalyptic number.

64380001571 is a deficient number, since it is larger than the sum of its proper divisors (1).

64380001571 is an equidigital number, since it uses as much as digits as its factorization.

64380001571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 64380001571 in words is "sixty-four billion, three hundred eighty million, one thousand, five hundred seventy-one".