128492244377 has 8 divisors (see below), whose sum is σ = 146854954176. Its totient is φ = 110131203312.

The previous prime is 128492244373. The next prime is 128492244401. The reversal of 128492244377 is 773442294821.

It is a happy number.

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 128492244377 - 2² = 128492244373 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128492244371) 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, 247583 + ... + 564164.

It is an arithmetic number, because the mean of its divisors is an integer number (18356869272).

Almost surely, 2^128492244377 is an apocalyptic number.

It is an amenable number.

128492244377 is a deficient number, since it is larger than the sum of its proper divisors (18362709799).

128492244377 is an equidigital number, since it uses as much as digits as its factorization.

128492244377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834367.

The product of its digits is 5419008, while the sum is 53.

The spelling of 128492244377 in words is "one hundred twenty-eight billion, four hundred ninety-two million, two hundred forty-four thousand, three hundred seventy-seven".