128452465271 has 24 divisors (see below), whose sum is σ = 139778694000. Its totient is φ = 117988655616.

The previous prime is 128452465249. The next prime is 128452465279. The reversal of 128452465271 is 172564254821.

It is a de Polignac number, because none of the positive numbers 2^k-128452465271 is a prime.

It is a super-2 number, since 2×128452465271² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128452465279) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46725605 + ... + 46728353.

It is an arithmetic number, because the mean of its divisors is an integer number (5824112250).

Almost surely, 2^128452465271 is an apocalyptic number.

128452465271 is a deficient number, since it is larger than the sum of its proper divisors (11326228729).

128452465271 is a wasteful number, since it uses less digits than its factorization.

128452465271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4035 (or 4022 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 47.

The spelling of 128452465271 in words is "one hundred twenty-eight billion, four hundred fifty-two million, four hundred sixty-five thousand, two hundred seventy-one".