64154834044 has 24 divisors (see below), whose sum is σ = 129170815200. Its totient is φ = 27310397376.

The previous prime is 64154834041. The next prime is 64154834063. The reversal of 64154834044 is 44043845146.

It is a super-3 number, since 3×64154834044³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64154834041) 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 7 ways as a sum of consecutive naturals, for example, 7684567 + ... + 7692910.

It is an arithmetic number, because the mean of its divisors is an integer number (5382117300).

Almost surely, 2^64154834044 is an apocalyptic number.

It is an amenable number.

64154834044 is an abundant number, since it is smaller than the sum of its proper divisors (65015981156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64154834044 is a wasteful number, since it uses less digits than its factorization.

64154834044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15377637 (or 15377635 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 43.

The spelling of 64154834044 in words is "sixty-four billion, one hundred fifty-four million, eight hundred thirty-four thousand, forty-four".