128484047261 has 8 divisors (see below), whose sum is σ = 136066150584. Its totient is φ = 120904634880.

The previous prime is 128484047221. The next prime is 128484047267. The reversal of 128484047261 is 162740484821.

It can be written as a sum of positive squares in 4 ways, for example, as 110227984036 + 18256063225 = 332006^2 + 135115^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128484047261 - 2¹⁴ = 128484030877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128484047267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574010 + ... + 765803.

It is an arithmetic number, because the mean of its divisors is an integer number (17008268823).

Almost surely, 2^128484047261 is an apocalyptic number.

It is an amenable number.

128484047261 is a deficient number, since it is larger than the sum of its proper divisors (7582103323).

128484047261 is a wasteful number, since it uses less digits than its factorization.

128484047261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345471.

The product of its (nonzero) digits is 688128, while the sum is 47.

The spelling of 128484047261 in words is "one hundred twenty-eight billion, four hundred eighty-four million, forty-seven thousand, two hundred sixty-one".