64154834072 has 48 divisors (see below), whose sum is σ = 140166025560. Its totient is φ = 27448463616.

The previous prime is 64154834063. The next prime is 64154834113. The reversal of 64154834072 is 27043845146.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94463 + ... + 370449.

Almost surely, 2^64154834072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64154834072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70083012780).

64154834072 is an abundant number, since it is smaller than the sum of its proper divisors (76011191488).

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

64154834072 is a wasteful number, since it uses less digits than its factorization.

64154834072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276600 (or 276589 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 44.

The spelling of 64154834072 in words is "sixty-four billion, one hundred fifty-four million, eight hundred thirty-four thousand, seventy-two".