128270953526 has 4 divisors (see below), whose sum is σ = 192406430292. Its totient is φ = 64135476762.

The previous prime is 128270953511. The next prime is 128270953529. The reversal of 128270953526 is 625359072821.

It is a happy number.

128270953526 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128270953529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32067738380 + ... + 32067738383.

It is an arithmetic number, because the mean of its divisors is an integer number (48101607573).

Almost surely, 2^128270953526 is an apocalyptic number.

128270953526 is a deficient number, since it is larger than the sum of its proper divisors (64135476766).

128270953526 is an equidigital number, since it uses as much as digits as its factorization.

128270953526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64135476765.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 128270953526 in words is "one hundred twenty-eight billion, two hundred seventy million, nine hundred fifty-three thousand, five hundred twenty-six".