64537545602804 has 24 divisors (see below), whose sum is σ = 114003626573928. Its totient is φ = 31966427617920.

The previous prime is 64537545602801. The next prime is 64537545602809. The reversal of 64537545602804 is 40820654573546.

It can be written as a sum of positive squares in 4 ways, for example, as 18728987290000 + 45808558312804 = 4327700^2 + 6768202^2 .

It is a super-3 number, since 3×64537545602804³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64537545602801) 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, 168151907 + ... + 168535274.

It is an arithmetic number, because the mean of its divisors is an integer number (4750151107247).

Almost surely, 2^{64537545602804} is an apocalyptic number.

It is an amenable number.

64537545602804 is a deficient number, since it is larger than the sum of its proper divisors (49466080971124).

64537545602804 is a wasteful number, since it uses less digits than its factorization.

64537545602804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336687635 (or 336687633 counting only the distinct ones).

The product of its (nonzero) digits is 96768000, while the sum is 59.

The spelling of 64537545602804 in words is "sixty-four trillion, five hundred thirty-seven billion, five hundred forty-five million, six hundred two thousand, eight hundred four".