643123113465363 has 16 divisors (see below), whose sum is σ = 875563673218560. Its totient is φ = 419750592285024.

The previous prime is 643123113465337. The next prime is 643123113465367. The reversal of 643123113465363 is 363564311321346.

It is not a de Polignac number, because 643123113465363 - 2⁵ = 643123113465331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (643123113465367) 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 15 ways as a sum of consecutive naturals, for example, 4367960353 + ... + 4368107586.

It is an arithmetic number, because the mean of its divisors is an integer number (54722729576160).

Almost surely, 2^{643123113465363} is an apocalyptic number.

643123113465363 is a deficient number, since it is larger than the sum of its proper divisors (232440559753197).

643123113465363 is a wasteful number, since it uses less digits than its factorization.

643123113465363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8736068458.

The product of its digits is 8398080, while the sum is 51.

The spelling of 643123113465363 in words is "six hundred forty-three trillion, one hundred twenty-three billion, one hundred thirteen million, four hundred sixty-five thousand, three hundred sixty-three".