128977683411 has 8 divisors (see below), whose sum is σ = 172237696960. Its totient is φ = 85851396072.

The previous prime is 128977683409. The next prime is 128977683427. The reversal of 128977683411 is 114386779821.

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

It is not a de Polignac number, because 128977683411 - 2¹ = 128977683409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128977683481) 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, 33429301 + ... + 33433158.

It is an arithmetic number, because the mean of its divisors is an integer number (21529712120).

Almost surely, 2^128977683411 is an apocalyptic number.

128977683411 is a deficient number, since it is larger than the sum of its proper divisors (43260013549).

128977683411 is an equidigital number, since it uses as much as digits as its factorization.

128977683411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66863105.

The product of its digits is 4064256, while the sum is 57.

The spelling of 128977683411 in words is "one hundred twenty-eight billion, nine hundred seventy-seven million, six hundred eighty-three thousand, four hundred eleven".