128465693647953 has 16 divisors (see below), whose sum is σ = 176933847112896. Its totient is φ = 82847427480000.

The previous prime is 128465693647943. The next prime is 128465693647961. The reversal of 128465693647953 is 359746396564821.

It is not a de Polignac number, because 128465693647953 - 2²⁴ = 128465676870737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128465693647933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3344918923 + ... + 3344957328.

It is an arithmetic number, because the mean of its divisors is an integer number (11058365444556).

Almost surely, 2^{128465693647953} is an apocalyptic number.

It is an amenable number.

128465693647953 is a deficient number, since it is larger than the sum of its proper divisors (48468153464943).

128465693647953 is a wasteful number, since it uses less digits than its factorization.

128465693647953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6689876464.

The product of its digits is 7054387200, while the sum is 78.

The spelling of 128465693647953 in words is "one hundred twenty-eight trillion, four hundred sixty-five billion, six hundred ninety-three million, six hundred forty-seven thousand, nine hundred fifty-three".