64555555959 has 32 divisors (see below), whose sum is σ = 98750361600. Its totient is φ = 41637183840.

The previous prime is 64555555951. The next prime is 64555556003. The reversal of 64555555959 is 95955555546.

It is not a de Polignac number, because 64555555959 - 2³ = 64555555951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64555555896 and 64555555905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64555555951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3827557 + ... + 3844385.

It is an arithmetic number, because the mean of its divisors is an integer number (3085948800).

Almost surely, 2^64555555959 is an apocalyptic number.

64555555959 is a deficient number, since it is larger than the sum of its proper divisors (34194805641).

64555555959 is a wasteful number, since it uses less digits than its factorization.

64555555959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21452 (or 21446 counting only the distinct ones).

The product of its digits is 151875000, while the sum is 63.

The spelling of 64555555959 in words is "sixty-four billion, five hundred fifty-five million, five hundred fifty-five thousand, nine hundred fifty-nine".