64854248461477 has 8 divisors (see below), whose sum is σ = 65087918161560. Its totient is φ = 64620662599680.

The previous prime is 64854248461423. The next prime is 64854248461481. The reversal of 64854248461477 is 77416484245846.

64854248461477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 561658814721 + 64292589646756 = 749439^2 + 8018266^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 64854248461477 - 2³⁹ = 64304492647589 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 (64854248461577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19409452 + ... + 22504117.

It is an arithmetic number, because the mean of its divisors is an integer number (8135989770195).

Almost surely, 2^{64854248461477} is an apocalyptic number.

It is an amenable number.

64854248461477 is a deficient number, since it is larger than the sum of its proper divisors (233669700083).

64854248461477 is a wasteful number, since it uses less digits than its factorization.

64854248461477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41919143.

The product of its digits is 1156055040, while the sum is 70.

The spelling of 64854248461477 in words is "sixty-four trillion, eight hundred fifty-four billion, two hundred forty-eight million, four hundred sixty-one thousand, four hundred seventy-seven".