64511231423071 has 2 divisors, whose sum is σ = 64511231423072. Its totient is φ = 64511231423070.

The previous prime is 64511231423057. The next prime is 64511231423077. The reversal of 64511231423071 is 17032413211546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64511231423071 - 2⁵ = 64511231423039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64511231423077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32255615711535 + 32255615711536.

It is an arithmetic number, because the mean of its divisors is an integer number (32255615711536).

Almost surely, 2^{64511231423071} is an apocalyptic number.

64511231423071 is a deficient number, since it is larger than the sum of its proper divisors (1).

64511231423071 is an equidigital number, since it uses as much as digits as its factorization.

64511231423071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 64511231423071 in words is "sixty-four trillion, five hundred eleven billion, two hundred thirty-one million, four hundred twenty-three thousand, seventy-one".