64271524044 has 216 divisors, whose sum is σ = 190322023248. Its totient is φ = 16823439360.

The previous prime is 64271524003. The next prime is 64271524049. The reversal of 64271524044 is 44042517246.

It is a super-2 number, since 2×64271524044² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 64271523993 and 64271524011.

It is not an unprimeable number, because it can be changed into a prime (64271524049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 13611604 + ... + 13616324.

It is an arithmetic number, because the mean of its divisors is an integer number (881120478).

Almost surely, 2^64271524044 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 64271524044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95161011624).

64271524044 is an abundant number, since it is smaller than the sum of its proper divisors (126050499204).

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

64271524044 is a wasteful number, since it uses less digits than its factorization.

64271524044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4905 (or 4883 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 39.

The spelling of 64271524044 in words is "sixty-four billion, two hundred seventy-one million, five hundred twenty-four thousand, forty-four".