64140251401 has 2 divisors, whose sum is σ = 64140251402. Its totient is φ = 64140251400.

The previous prime is 64140251393. The next prime is 64140251411. The reversal of 64140251401 is 10415204146.

64140251401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53659406025 + 10480845376 = 231645^2 + 102376^2 .

It is a cyclic number.

It is not a de Polignac number, because 64140251401 - 2³ = 64140251393 is a prime.

It is a super-2 number, since 2×64140251401² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64140251401.

It is not a weakly prime, because it can be changed into another prime (64140251411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32070125700 + 32070125701.

It is an arithmetic number, because the mean of its divisors is an integer number (32070125701).

Almost surely, 2^64140251401 is an apocalyptic number.

It is an amenable number.

64140251401 is a deficient number, since it is larger than the sum of its proper divisors (1).

64140251401 is an equidigital number, since it uses as much as digits as its factorization.

64140251401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 64140251401 its reverse (10415204146), we get a palindrome (74555455547).

The spelling of 64140251401 in words is "sixty-four billion, one hundred forty million, two hundred fifty-one thousand, four hundred one".