128763710212 has 12 divisors (see below), whose sum is σ = 231426668620. Its totient is φ = 62641804896.

The previous prime is 128763710189. The next prime is 128763710213. The reversal of 128763710212 is 212017367821.

It can be written as a sum of positive squares in 2 ways, for example, as 101291973696 + 27471736516 = 318264^2 + 165746^2 .

It is not an unprimeable number, because it can be changed into a prime (128763710213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435012387 + ... + 435012682.

Almost surely, 2^128763710212 is an apocalyptic number.

It is an amenable number.

128763710212 is a deficient number, since it is larger than the sum of its proper divisors (102662958408).

128763710212 is a wasteful number, since it uses less digits than its factorization.

128763710212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870025110 (or 870025108 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 128763710212 in words is "one hundred twenty-eight billion, seven hundred sixty-three million, seven hundred ten thousand, two hundred twelve".