64872959369 has 4 divisors (see below), whose sum is σ = 64912833744. Its totient is φ = 64833084996.

The previous prime is 64872959351. The next prime is 64872959381. The reversal of 64872959369 is 96395927846.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96395927846 = 2 ⋅48197963923.

It is a cyclic number.

It is not a de Polignac number, because 64872959369 - 2²⁰ = 64871910793 is a prime.

It is a super-2 number, since 2×64872959369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64872959299 and 64872959308.

It is not an unprimeable number, because it can be changed into a prime (64872959869) 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, 19934747 + ... + 19938000.

It is an arithmetic number, because the mean of its divisors is an integer number (16228208436).

Almost surely, 2^64872959369 is an apocalyptic number.

It is an amenable number.

64872959369 is a deficient number, since it is larger than the sum of its proper divisors (39874375).

64872959369 is a wasteful number, since it uses less digits than its factorization.

64872959369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39874374.

The product of its digits is 176359680, while the sum is 68.

The spelling of 64872959369 in words is "sixty-four billion, eight hundred seventy-two million, nine hundred fifty-nine thousand, three hundred sixty-nine".