128775274737 has 8 divisors (see below), whose sum is σ = 181800387936. Its totient is φ = 80800172352.

The previous prime is 128775274729. The next prime is 128775274753. The reversal of 128775274737 is 737472577821.

It is a happy number.

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

It is not a de Polignac number, because 128775274737 - 2³ = 128775274729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128775274717) 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, 1262502643 + ... + 1262502744.

It is an arithmetic number, because the mean of its divisors is an integer number (22725048492).

Almost surely, 2^128775274737 is an apocalyptic number.

128775274737 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

128775274737 is a deficient number, since it is larger than the sum of its proper divisors (53025113199).

128775274737 is a wasteful number, since it uses less digits than its factorization.

128775274737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525005407.

The product of its digits is 32269440, while the sum is 60.

The spelling of 128775274737 in words is "one hundred twenty-eight billion, seven hundred seventy-five million, two hundred seventy-four thousand, seven hundred thirty-seven".