128016554 has 8 divisors (see below), whose sum is σ = 192403620. Its totient is φ = 63882016.

The previous prime is 128016541. The next prime is 128016569. The reversal of 128016554 is 455610821.

It can be written as a sum of positive squares in 2 ways, for example, as 104755225 + 23261329 = 10235^2 + 4823^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 128016554.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61859 + ... + 63894.

Almost surely, 2^128016554 is an apocalyptic number.

128016554 is a deficient number, since it is larger than the sum of its proper divisors (64387066).

128016554 is a wasteful number, since it uses less digits than its factorization.

128016554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126264.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 128016554 is about 11314.4400656860. The cubic root of 128016554 is about 503.9901447850.

The spelling of 128016554 in words is "one hundred twenty-eight million, sixteen thousand, five hundred fifty-four".