64090013887 has 2 divisors, whose sum is σ = 64090013888. Its totient is φ = 64090013886.

The previous prime is 64090013879. The next prime is 64090013903. The reversal of 64090013887 is 78831009046.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64090013887 - 2³ = 64090013879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64090013587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32045006943 + 32045006944.

It is an arithmetic number, because the mean of its divisors is an integer number (32045006944).

Almost surely, 2^64090013887 is an apocalyptic number.

64090013887 is a deficient number, since it is larger than the sum of its proper divisors (1).

64090013887 is an equidigital number, since it uses as much as digits as its factorization.

64090013887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 64090013887 in words is "sixty-four billion, ninety million, thirteen thousand, eight hundred eighty-seven".