64276729628 has 12 divisors (see below), whose sum is σ = 112529234160. Its totient is φ = 32125519872.

The previous prime is 64276729613. The next prime is 64276729663. The reversal of 64276729628 is 82692767246.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3199973 + ... + 3219996.

It is an arithmetic number, because the mean of its divisors is an integer number (9377436180).

Almost surely, 2^64276729628 is an apocalyptic number.

It is an amenable number.

64276729628 is a deficient number, since it is larger than the sum of its proper divisors (48252504532).

64276729628 is a wasteful number, since it uses less digits than its factorization.

64276729628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6422476 (or 6422474 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 59.

The spelling of 64276729628 in words is "sixty-four billion, two hundred seventy-six million, seven hundred twenty-nine thousand, six hundred twenty-eight".