64511103793 has 2 divisors, whose sum is σ = 64511103794. Its totient is φ = 64511103792.

The previous prime is 64511103779. The next prime is 64511103817. The reversal of 64511103793 is 39730111546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36606403584 + 27904700209 = 191328^2 + 167047^2 .

It is a cyclic number.

It is not a de Polignac number, because 64511103793 - 2⁹ = 64511103281 is a prime.

It is not a weakly prime, because it can be changed into another prime (64511103493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32255551896 + 32255551897.

It is an arithmetic number, because the mean of its divisors is an integer number (32255551897).

Almost surely, 2^64511103793 is an apocalyptic number.

It is an amenable number.

64511103793 is a deficient number, since it is larger than the sum of its proper divisors (1).

64511103793 is an equidigital number, since it uses as much as digits as its factorization.

64511103793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 40.

The spelling of 64511103793 in words is "sixty-four billion, five hundred eleven million, one hundred three thousand, seven hundred ninety-three".