64500705628 has 12 divisors (see below), whose sum is σ = 113411194792. Its totient is φ = 32097507120.

The previous prime is 64500705623. The next prime is 64500705697. The reversal of 64500705628 is 82650700546.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64500705623) 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, 38210475 + ... + 38212162.

Almost surely, 2^64500705628 is an apocalyptic number.

It is an amenable number.

64500705628 is a deficient number, since it is larger than the sum of its proper divisors (48910489164).

64500705628 is a wasteful number, since it uses less digits than its factorization.

64500705628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76422852 (or 76422850 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 64500705628 in words is "sixty-four billion, five hundred million, seven hundred five thousand, six hundred twenty-eight".