64537080991018 has 16 divisors (see below), whose sum is σ = 96900632303040. Its totient is φ = 32236875449856.

The previous prime is 64537080991003. The next prime is 64537080991037. The reversal of 64537080991018 is 81019908073546.

64537080991018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 23511018 + ... + 26112106.

It is an arithmetic number, because the mean of its divisors is an integer number (6056289518940).

Almost surely, 2^{64537080991018} is an apocalyptic number.

64537080991018 is a deficient number, since it is larger than the sum of its proper divisors (32363551312022).

64537080991018 is a wasteful number, since it uses less digits than its factorization.

64537080991018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613261.

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 64537080991018 in words is "sixty-four trillion, five hundred thirty-seven billion, eighty million, nine hundred ninety-one thousand, eighteen".