64434977454869 has 8 divisors (see below), whose sum is σ = 74572125807360. Its totient is φ = 54530866995696.

The previous prime is 64434977454833. The next prime is 64434977454877. The reversal of 64434977454869 is 96845477943446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-64434977454869 is a prime.

It is a super-2 number, since 2×64434977454869² (a number of 28 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 = 64434977454793 and 64434977454802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64434977454889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58259472734 + ... + 58259473839.

It is an arithmetic number, because the mean of its divisors is an integer number (9321515725920).

Almost surely, 2^{64434977454869} is an apocalyptic number.

It is an amenable number.

64434977454869 is a deficient number, since it is larger than the sum of its proper divisors (10137148352491).

64434977454869 is a wasteful number, since it uses less digits than its factorization.

64434977454869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116518946659.

The product of its digits is 17557585920, while the sum is 80.

The spelling of 64434977454869 in words is "sixty-four trillion, four hundred thirty-four billion, nine hundred seventy-seven million, four hundred fifty-four thousand, eight hundred sixty-nine".