135128214850 has 12 divisors (see below), whose sum is σ = 251338479714. Its totient is φ = 54051285920.

The previous prime is 135128214841. The next prime is 135128214877. The reversal of 135128214850 is 58412821531.

It can be written as a sum of positive squares in 3 ways, for example, as 66817597081 + 68310617769 = 258491^2 + 261363^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1351282099 + ... + 1351282198.

Almost surely, 2^135128214850 is an apocalyptic number.

135128214850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135128214850 is a deficient number, since it is larger than the sum of its proper divisors (116210264864).

135128214850 is a wasteful number, since it uses less digits than its factorization.

135128214850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702564309 (or 2702564304 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The spelling of 135128214850 in words is "one hundred thirty-five billion, one hundred twenty-eight million, two hundred fourteen thousand, eight hundred fifty".