64539150271 has 4 divisors (see below), whose sum is σ = 64895720344. Its totient is φ = 64182580200.

The previous prime is 64539150227. The next prime is 64539150323. The reversal of 64539150271 is 17205193546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64539150271 - 2³⁵ = 30179411903 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 (64539150671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178284765 + ... + 178285126.

It is an arithmetic number, because the mean of its divisors is an integer number (16223930086).

Almost surely, 2^64539150271 is an apocalyptic number.

64539150271 is a deficient number, since it is larger than the sum of its proper divisors (356570073).

64539150271 is a wasteful number, since it uses less digits than its factorization.

64539150271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356570072.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 64539150271 in words is "sixty-four billion, five hundred thirty-nine million, one hundred fifty thousand, two hundred seventy-one".