64873646890470 has 672 divisors, whose sum is σ = 206556798422016. Its totient is φ = 14598819164160.

The previous prime is 64873646890469. The next prime is 64873646890579. The reversal of 64873646890470 is 7409864637846.

64873646890470 is a `hidden beast` number, since 6 + 4 + 8 + 7 + 3 + 6 + 4 + 68 + 90 + 470 = 666.

64873646890470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 335 ways as a sum of consecutive naturals, for example, 1094644059 + ... + 1094703321.

It is an arithmetic number, because the mean of its divisors is an integer number (307376188128).

Almost surely, 2^{64873646890470} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64873646890470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103278399211008).

64873646890470 is an abundant number, since it is smaller than the sum of its proper divisors (141683151531546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64873646890470 is a wasteful number, since it uses less digits than its factorization.

64873646890470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59400 (or 59374 counting only the distinct ones).

The product of its (nonzero) digits is 1170505728, while the sum is 72.

The spelling of 64873646890470 in words is "sixty-four trillion, eight hundred seventy-three billion, six hundred forty-six million, eight hundred ninety thousand, four hundred seventy".