64450871039 has 4 divisors (see below), whose sum is σ = 64513385040. Its totient is φ = 64388357040.

The previous prime is 64450871011. The next prime is 64450871059. The reversal of 64450871039 is 93017805446.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64450871039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64450870984 and 64450871002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64450871059) 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, 31255454 + ... + 31257515.

It is an arithmetic number, because the mean of its divisors is an integer number (16128346260).

Almost surely, 2^64450871039 is an apocalyptic number.

64450871039 is a deficient number, since it is larger than the sum of its proper divisors (62514001).

64450871039 is a wasteful number, since it uses less digits than its factorization.

64450871039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62514000.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 64450871039 in words is "sixty-four billion, four hundred fifty million, eight hundred seventy-one thousand, thirty-nine".