64242265387 has 2 divisors, whose sum is σ = 64242265388. Its totient is φ = 64242265386.

The previous prime is 64242265357. The next prime is 64242265411. The reversal of 64242265387 is 78356224246.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64242265387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64242265387.

It is not a weakly prime, because it can be changed into another prime (64242265357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32121132693 + 32121132694.

It is an arithmetic number, because the mean of its divisors is an integer number (32121132694).

Almost surely, 2^64242265387 is an apocalyptic number.

64242265387 is a deficient number, since it is larger than the sum of its proper divisors (1).

64242265387 is an equidigital number, since it uses as much as digits as its factorization.

64242265387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 49.

The spelling of 64242265387 in words is "sixty-four billion, two hundred forty-two million, two hundred sixty-five thousand, three hundred eighty-seven".