128172061562 has 8 divisors (see below), whose sum is σ = 192318126336. Its totient is φ = 64066019452.

The previous prime is 128172061559. The next prime is 128172061571. The reversal of 128172061562 is 265160271821.

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

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, 9997658 + ... + 10010469.

It is an arithmetic number, because the mean of its divisors is an integer number (24039765792).

Almost surely, 2^128172061562 is an apocalyptic number.

128172061562 is a deficient number, since it is larger than the sum of its proper divisors (64146064774).

128172061562 is a wasteful number, since it uses less digits than its factorization.

128172061562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20011332.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 128172061562 in words is "one hundred twenty-eight billion, one hundred seventy-two million, sixty-one thousand, five hundred sixty-two".