64873087634287 has 4 divisors (see below), whose sum is σ = 64896100438680. Its totient is φ = 64850074829896.

The previous prime is 64873087634281. The next prime is 64873087634293. The reversal of 64873087634287 is 78243678037846.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (64873087634281) and next prime (64873087634293).

It is a cyclic number.

It is not a de Polignac number, because 64873087634287 - 2²³ = 64873079245679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64873087634281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11506397968 + ... + 11506403605.

It is an arithmetic number, because the mean of its divisors is an integer number (16224025109670).

Almost surely, 2^{64873087634287} is an apocalyptic number.

64873087634287 is a deficient number, since it is larger than the sum of its proper divisors (23012804393).

64873087634287 is a wasteful number, since it uses less digits than its factorization.

64873087634287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23012804392.

The product of its (nonzero) digits is 1820786688, while the sum is 73.

The spelling of 64873087634287 in words is "sixty-four trillion, eight hundred seventy-three billion, eighty-seven million, six hundred thirty-four thousand, two hundred eighty-seven".