12800127940 has 24 divisors (see below), whose sum is σ = 27146414232. Its totient is φ = 5069356800.

The previous prime is 12800127929. The next prime is 12800127953. The reversal of 12800127940 is 4972100821.

It can be written as a sum of positive squares in 4 ways, for example, as 8180478916 + 4619649024 = 90446^2 + 67968^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12800127896 and 12800127905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3166329 + ... + 3170368.

It is an arithmetic number, because the mean of its divisors is an integer number (1131100593).

Almost surely, 2^12800127940 is an apocalyptic number.

12800127940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12800127940 is an abundant number, since it is smaller than the sum of its proper divisors (14346286292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12800127940 is a wasteful number, since it uses less digits than its factorization.

12800127940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6336807 (or 6336805 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 12800127940 in words is "twelve billion, eight hundred million, one hundred twenty-seven thousand, nine hundred forty".