64340023837 has 2 divisors, whose sum is σ = 64340023838. Its totient is φ = 64340023836.

The previous prime is 64340023801. The next prime is 64340023873. The reversal of 64340023837 is 73832004346.

Together with next prime (64340023873) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (64340023801) and next prime (64340023873).

It can be written as a sum of positive squares in only one way, i.e., 52584910596 + 11755113241 = 229314^2 + 108421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64340023837 is a prime.

It is a super-3 number, since 3×64340023837³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64340023837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64340023037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32170011918 + 32170011919.

It is an arithmetic number, because the mean of its divisors is an integer number (32170011919).

Almost surely, 2^64340023837 is an apocalyptic number.

It is an amenable number.

64340023837 is a deficient number, since it is larger than the sum of its proper divisors (1).

64340023837 is an equidigital number, since it uses as much as digits as its factorization.

64340023837 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 40.

The spelling of 64340023837 in words is "sixty-four billion, three hundred forty million, twenty-three thousand, eight hundred thirty-seven".