128466545554 has 4 divisors (see below), whose sum is σ = 192699818334. Its totient is φ = 64233272776.

The previous prime is 128466545533. The next prime is 128466545593. The reversal of 128466545554 is 455545664821.

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

It can be written as a sum of positive squares in only one way, i.e., 120914066529 + 7552479025 = 347727^2 + 86905^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128466545495 and 128466545504.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32116636387 + ... + 32116636390.

Almost surely, 2^128466545554 is an apocalyptic number.

128466545554 is a deficient number, since it is larger than the sum of its proper divisors (64233272780).

128466545554 is an equidigital number, since it uses as much as digits as its factorization.

128466545554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64233272779.

The product of its digits is 23040000, while the sum is 55.

The spelling of 128466545554 in words is "one hundred twenty-eight billion, four hundred sixty-six million, five hundred forty-five thousand, five hundred fifty-four".