64188939240001 has 2 divisors, whose sum is σ = 64188939240002. Its totient is φ = 64188939240000.

The previous prime is 64188939239959. The next prime is 64188939240007. The reversal of 64188939240001 is 10004293988146.

It is a Cunningham number, because it is equal to 8011800²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64188939240000 + 1 = 8011800^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 64188939240001 - 2¹¹ = 64188939237953 is a prime.

It is not a weakly prime, because it can be changed into another prime (64188939240007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32094469620000 + 32094469620001.

It is an arithmetic number, because the mean of its divisors is an integer number (32094469620001).

Almost surely, 2^{64188939240001} is an apocalyptic number.

It is an amenable number.

64188939240001 is a deficient number, since it is larger than the sum of its proper divisors (1).

64188939240001 is an equidigital number, since it uses as much as digits as its factorization.

64188939240001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 64188939240001 in words is "sixty-four trillion, one hundred eighty-eight billion, nine hundred thirty-nine million, two hundred forty thousand, one".