128526299259136 has 27 divisors (see below), whose sum is σ = 256550904735951. Its totient is φ = 64263058934016.

The previous prime is 128526299259121. The next prime is 128526299259161. The reversal of 128526299259136 is 631952992625821.

The square root of 128526299259136 is 11336944.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 181036825 + ... + 181745383.

Almost surely, 2^{128526299259136} is an apocalyptic number.

128526299259136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

128526299259136 is the 11336944-th square number.

It is an amenable number.

128526299259136 is a deficient number, since it is larger than the sum of its proper divisors (128024605476815).

128526299259136 is an frugal number, since it uses more digits than its factorization.

128526299259136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417134 (or 708561 counting only the distinct ones).

The product of its digits is 251942400, while the sum is 70.

The spelling of 128526299259136 in words is "one hundred twenty-eight trillion, five hundred twenty-six billion, two hundred ninety-nine million, two hundred fifty-nine thousand, one hundred thirty-six".