65628358728 has 64 divisors (see below), whose sum is σ = 165238254720. Its totient is φ = 21720768000.

The previous prime is 65628358703. The next prime is 65628358753. The reversal of 65628358728 is 82785382656.

It is an interprime number because it is at equal distance from previous prime (65628358703) and next prime (65628358753).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3762828 + ... + 3780228.

It is an arithmetic number, because the mean of its divisors is an integer number (2581847730).

Almost surely, 2^65628358728 is an apocalyptic number.

It is an amenable number.

65628358728 is an abundant number, since it is smaller than the sum of its proper divisors (99609895992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65628358728 is a wasteful number, since it uses less digits than its factorization.

65628358728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18518 (or 18514 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 60.

The spelling of 65628358728 in words is "sixty-five billion, six hundred twenty-eight million, three hundred fifty-eight thousand, seven hundred twenty-eight".