628418643064 has 32 divisors (see below), whose sum is σ = 1218116758320. Its totient is φ = 303738172416.

The previous prime is 628418643059. The next prime is 628418643067. The reversal of 628418643064 is 460346814826.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628418643067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9383119 + ... + 9449854.

Almost surely, 2^628418643064 is an apocalyptic number.

It is an amenable number.

628418643064 is a deficient number, since it is larger than the sum of its proper divisors (589698115256).

628418643064 is a wasteful number, since it uses less digits than its factorization.

628418643064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18833119 (or 18833115 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 52.

The spelling of 628418643064 in words is "six hundred twenty-eight billion, four hundred eighteen million, six hundred forty-three thousand, sixty-four".