64356032128 has 32 divisors (see below), whose sum is σ = 128235395520. Its totient is φ = 32171462400.

The previous prime is 64356032101. The next prime is 64356032149. The reversal of 64356032128 is 82123065346.

It is a tau number, because it is divible by the number of its divisors (32).

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, 613273 + ... + 710503.

It is an arithmetic number, because the mean of its divisors is an integer number (4007356110).

Almost surely, 2^64356032128 is an apocalyptic number.

It is an amenable number.

64356032128 is a deficient number, since it is larger than the sum of its proper divisors (63879363392).

64356032128 is an equidigital number, since it uses as much as digits as its factorization.

64356032128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102416 (or 102404 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 64356032128 in words is "sixty-four billion, three hundred fifty-six million, thirty-two thousand, one hundred twenty-eight".