12757706128 has 10 divisors (see below), whose sum is σ = 24718055654. Its totient is φ = 6378853056.

The previous prime is 12757706119. The next prime is 12757706131. The reversal of 12757706128 is 82160775721.

It can be written as a sum of positive squares in only one way, i.e., 7940235664 + 4817470464 = 89108^2 + 69408^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398678301 + ... + 398678332.

Almost surely, 2^12757706128 is an apocalyptic number.

It is an amenable number.

12757706128 is a deficient number, since it is larger than the sum of its proper divisors (11960349526).

12757706128 is an equidigital number, since it uses as much as digits as its factorization.

12757706128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797356641 (or 797356635 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 46.

The spelling of 12757706128 in words is "twelve billion, seven hundred fifty-seven million, seven hundred six thousand, one hundred twenty-eight".