64434251255 has 32 divisors (see below), whose sum is σ = 88054000128. Its totient is φ = 44805340800.

The previous prime is 64434251251. The next prime is 64434251263. The reversal of 64434251255 is 55215243446.

64434251255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64434251255 - 2² = 64434251251 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 (64434251251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3529100 + ... + 3547310.

It is an arithmetic number, because the mean of its divisors is an integer number (2751687504).

Almost surely, 2^64434251255 is an apocalyptic number.

64434251255 is a deficient number, since it is larger than the sum of its proper divisors (23619748873).

64434251255 is a wasteful number, since it uses less digits than its factorization.

64434251255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21047.

The product of its digits is 576000, while the sum is 41.

The spelling of 64434251255 in words is "sixty-four billion, four hundred thirty-four million, two hundred fifty-one thousand, two hundred fifty-five".