128158511547 has 8 divisors (see below), whose sum is σ = 186412380480. Its totient is φ = 77671825160.

The previous prime is 128158511539. The next prime is 128158511557. The reversal of 128158511547 is 745115851821.

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 128158511547 - 2³ = 128158511539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128158511496 and 128158511505.

It is not an unprimeable number, because it can be changed into a prime (128158511557) 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, 1941795597 + ... + 1941795662.

It is an arithmetic number, because the mean of its divisors is an integer number (23301547560).

Almost surely, 2^128158511547 is an apocalyptic number.

128158511547 is a deficient number, since it is larger than the sum of its proper divisors (58253868933).

128158511547 is a wasteful number, since it uses less digits than its factorization.

128158511547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883591273.

The product of its digits is 448000, while the sum is 48.

The spelling of 128158511547 in words is "one hundred twenty-eight billion, one hundred fifty-eight million, five hundred eleven thousand, five hundred forty-seven".