128279841501 has 32 divisors (see below), whose sum is σ = 202272768000. Its totient is φ = 72270292080.

The previous prime is 128279841479. The next prime is 128279841553. The reversal of 128279841501 is 105148972821.

It is a happy number.

It is not a de Polignac number, because 128279841501 - 2²¹ = 128277744349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128279841401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 804861 + ... + 950978.

It is an arithmetic number, because the mean of its divisors is an integer number (6321024000).

Almost surely, 2^128279841501 is an apocalyptic number.

It is an amenable number.

128279841501 is a deficient number, since it is larger than the sum of its proper divisors (73992926499).

128279841501 is an equidigital number, since it uses as much as digits as its factorization.

128279841501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755934 (or 1755920 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 48.

The spelling of 128279841501 in words is "one hundred twenty-eight billion, two hundred seventy-nine million, eight hundred forty-one thousand, five hundred one".