64187228525123 has 16 divisors (see below), whose sum is σ = 70058059868160. Its totient is φ = 58322341908000.

The previous prime is 64187228525117. The next prime is 64187228525141. The reversal of 64187228525123 is 32152582278146.

It is a cyclic number.

It is not a de Polignac number, because 64187228525123 - 2²² = 64187224330819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64187228525183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199892648 + ... + 200213498.

It is an arithmetic number, because the mean of its divisors is an integer number (4378628741760).

Almost surely, 2^{64187228525123} is an apocalyptic number.

64187228525123 is a deficient number, since it is larger than the sum of its proper divisors (5870831343037).

64187228525123 is a wasteful number, since it uses less digits than its factorization.

64187228525123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330058.

The product of its digits is 12902400, while the sum is 56.

The spelling of 64187228525123 in words is "sixty-four trillion, one hundred eighty-seven billion, two hundred twenty-eight million, five hundred twenty-five thousand, one hundred twenty-three".