128059966951 has 4 divisors (see below), whose sum is σ = 146354247952. Its totient is φ = 109765685952.

The previous prime is 128059966949. The next prime is 128059967017. The reversal of 128059966951 is 159669950821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 159669950821 = 22433 ⋅7117637.

It is a cyclic number.

It is not a de Polignac number, because 128059966951 - 2¹ = 128059966949 is a prime.

It is a super-3 number, since 3×128059966951³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128059966951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128059966051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9147140490 + ... + 9147140503.

It is an arithmetic number, because the mean of its divisors is an integer number (36588561988).

Almost surely, 2^128059966951 is an apocalyptic number.

128059966951 is a deficient number, since it is larger than the sum of its proper divisors (18294281001).

128059966951 is an equidigital number, since it uses as much as digits as its factorization.

128059966951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18294281000.

The product of its (nonzero) digits is 10497600, while the sum is 61.

The spelling of 128059966951 in words is "one hundred twenty-eight billion, fifty-nine million, nine hundred sixty-six thousand, nine hundred fifty-one".