64604574554645 has 8 divisors (see below), whose sum is σ = 77613887976504. Its totient is φ = 51624727303104.

The previous prime is 64604574554603. The next prime is 64604574554659. The reversal of 64604574554645 is 54645547540646.

It can be written as a sum of positive squares in 4 ways, for example, as 2069518170724 + 62535056383921 = 1438582^2 + 7907911^2 .

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 64604574554645 - 2¹⁰ = 64604574553621 is a prime.

It is a super-3 number, since 3×64604574554645³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7366537754 + ... + 7366546523.

It is an arithmetic number, because the mean of its divisors is an integer number (9701735997063).

Almost surely, 2^{64604574554645} is an apocalyptic number.

It is an amenable number.

64604574554645 is a deficient number, since it is larger than the sum of its proper divisors (13009313421859).

64604574554645 is a wasteful number, since it uses less digits than its factorization.

64604574554645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14733085159.

The product of its (nonzero) digits is 967680000, while the sum is 65.

The spelling of 64604574554645 in words is "sixty-four trillion, six hundred four billion, five hundred seventy-four million, five hundred fifty-four thousand, six hundred forty-five".