64317337639 has 2 divisors, whose sum is σ = 64317337640. Its totient is φ = 64317337638.

The previous prime is 64317337619. The next prime is 64317337649. The reversal of 64317337639 is 93673371346.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64317337639 - 2⁵ = 64317337607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64317337619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32158668819 + 32158668820.

It is an arithmetic number, because the mean of its divisors is an integer number (32158668820).

Almost surely, 2^64317337639 is an apocalyptic number.

64317337639 is a deficient number, since it is larger than the sum of its proper divisors (1).

64317337639 is an equidigital number, since it uses as much as digits as its factorization.

64317337639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5143824, while the sum is 52.

It can be divided in two parts, 64317 and 337639, that added together give a square (401956 = 634²).

The spelling of 64317337639 in words is "sixty-four billion, three hundred seventeen million, three hundred thirty-seven thousand, six hundred thirty-nine".