643265454254 has 8 divisors (see below), whose sum is σ = 965164518000. Its totient is φ = 321543948256.

The previous prime is 643265454233. The next prime is 643265454257. The reversal of 643265454254 is 452454562346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643265454257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44380379 + ... + 44394870.

It is an arithmetic number, because the mean of its divisors is an integer number (120645564750).

Almost surely, 2^643265454254 is an apocalyptic number.

643265454254 is a deficient number, since it is larger than the sum of its proper divisors (321899063746).

643265454254 is a wasteful number, since it uses less digits than its factorization.

643265454254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88778874.

The product of its digits is 13824000, while the sum is 50.

The spelling of 643265454254 in words is "six hundred forty-three billion, two hundred sixty-five million, four hundred fifty-four thousand, two hundred fifty-four".