64703454010643 has 16 divisors (see below), whose sum is σ = 75717321523200. Its totient is φ = 54138377629536.

The previous prime is 64703454010607. The next prime is 64703454010649. The reversal of 64703454010643 is 34601045430746.

It is a cyclic number.

It is not a de Polignac number, because 64703454010643 - 2⁶ = 64703454010579 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (64703454010649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256619468 + ... + 256871481.

It is an arithmetic number, because the mean of its divisors is an integer number (4732332595200).

Almost surely, 2^{64703454010643} is an apocalyptic number.

64703454010643 is a deficient number, since it is larger than the sum of its proper divisors (11013867512557).

64703454010643 is a wasteful number, since it uses less digits than its factorization.

64703454010643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513491386.

The product of its (nonzero) digits is 2903040, while the sum is 47.

The spelling of 64703454010643 in words is "sixty-four trillion, seven hundred three billion, four hundred fifty-four million, ten thousand, six hundred forty-three".