64471041387688 has 32 divisors (see below), whose sum is σ = 130431779913960. Its totient is φ = 29698752245760.

The previous prime is 64471041387679. The next prime is 64471041387689. The reversal of 64471041387688 is 88678314017446.

It can be written as a sum of positive squares in 4 ways, for example, as 19426567523364 + 45044473864324 = 4407558^2 + 6711518^2 .

It is a super-3 number, since 3×64471041387688³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (64471041387689) 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, 594872745 + ... + 594981112.

Almost surely, 2^{64471041387688} is an apocalyptic number.

It is an amenable number.

64471041387688 is an abundant number, since it is smaller than the sum of its proper divisors (65960738526272).

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

64471041387688 is a wasteful number, since it uses less digits than its factorization.

64471041387688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189854397 (or 1189854393 counting only the distinct ones).

The product of its (nonzero) digits is 173408256, while the sum is 67.

The spelling of 64471041387688 in words is "sixty-four trillion, four hundred seventy-one billion, forty-one million, three hundred eighty-seven thousand, six hundred eighty-eight".