64271829672 has 128 divisors (see below), whose sum is σ = 182020195200. Its totient is φ = 21007641600.

The previous prime is 64271829667. The next prime is 64271829683. The reversal of 64271829672 is 27692817246.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4353888 + ... + 4368624.

It is an arithmetic number, because the mean of its divisors is an integer number (1422032775).

Almost surely, 2^64271829672 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 64271829672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91010097600).

64271829672 is an abundant number, since it is smaller than the sum of its proper divisors (117748365528).

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

64271829672 is a wasteful number, since it uses less digits than its factorization.

64271829672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15144 (or 15134 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The spelling of 64271829672 in words is "sixty-four billion, two hundred seventy-one million, eight hundred twenty-nine thousand, six hundred seventy-two".