128377662064501 has 8 divisors (see below), whose sum is σ = 130023607099520. Its totient is φ = 126732239813088.

The previous prime is 128377662064499. The next prime is 128377662064543. The reversal of 128377662064501 is 105460266773821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128377662064501 - 2¹ = 128377662064499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128377662064571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130201611 + ... + 131183896.

It is an arithmetic number, because the mean of its divisors is an integer number (16252950887440).

Almost surely, 2^{128377662064501} is an apocalyptic number.

It is an amenable number.

128377662064501 is a deficient number, since it is larger than the sum of its proper divisors (1645945035019).

128377662064501 is an equidigital number, since it uses as much as digits as its factorization.

128377662064501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261391803.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 128377662064501 in words is "one hundred twenty-eight trillion, three hundred seventy-seven billion, six hundred sixty-two million, sixty-four thousand, five hundred one".