64676939419 has 2 divisors, whose sum is σ = 64676939420. Its totient is φ = 64676939418.

The previous prime is 64676939347. The next prime is 64676939429. The reversal of 64676939419 is 91493967646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64676939419 - 2¹¹ = 64676937371 is a prime.

It is a super-2 number, since 2×64676939419² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64676939429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32338469709 + 32338469710.

It is an arithmetic number, because the mean of its divisors is an integer number (32338469710).

Almost surely, 2^64676939419 is an apocalyptic number.

64676939419 is a deficient number, since it is larger than the sum of its proper divisors (1).

64676939419 is an equidigital number, since it uses as much as digits as its factorization.

64676939419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52907904, while the sum is 64.

The spelling of 64676939419 in words is "sixty-four billion, six hundred seventy-six million, nine hundred thirty-nine thousand, four hundred nineteen".