64747111391 has 2 divisors, whose sum is σ = 64747111392. Its totient is φ = 64747111390.

The previous prime is 64747111361. The next prime is 64747111417. The reversal of 64747111391 is 19311174746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64747111391 - 2⁶ = 64747111327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64747111301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32373555695 + 32373555696.

It is an arithmetic number, because the mean of its divisors is an integer number (32373555696).

Almost surely, 2^64747111391 is an apocalyptic number.

64747111391 is a deficient number, since it is larger than the sum of its proper divisors (1).

64747111391 is an equidigital number, since it uses as much as digits as its factorization.

64747111391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 44.

The spelling of 64747111391 in words is "sixty-four billion, seven hundred forty-seven million, one hundred eleven thousand, three hundred ninety-one".