64157312756243 has 8 divisors (see below), whose sum is σ = 73322703473760. Its totient is φ = 54991937119680.

The previous prime is 64157312756237. The next prime is 64157312756269. The reversal of 64157312756243 is 34265721375146.

It is a happy number.

64157312756243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64157312756243 - 2¹⁰ = 64157312755219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64157312756233) by changing a digit.

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, 7653473 + ... + 13670781.

It is an arithmetic number, because the mean of its divisors is an integer number (9165337934220).

Almost surely, 2^{64157312756243} is an apocalyptic number.

64157312756243 is a deficient number, since it is larger than the sum of its proper divisors (9165390717517).

64157312756243 is a wasteful number, since it uses less digits than its factorization.

64157312756243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7540477.

The product of its digits is 25401600, while the sum is 56.

The spelling of 64157312756243 in words is "sixty-four trillion, one hundred fifty-seven billion, three hundred twelve million, seven hundred fifty-six thousand, two hundred forty-three".