255149898509 has 16 divisors (see below), whose sum is σ = 283098240000. Its totient is φ = 227994684720.

The previous prime is 255149898499. The next prime is 255149898541. The reversal of 255149898509 is 905898941552.

It is a de Polignac number, because none of the positive numbers 2^k-255149898509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255149898599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6573842 + ... + 6612540.

It is an arithmetic number, because the mean of its divisors is an integer number (17693640000).

Almost surely, 2^255149898509 is an apocalyptic number.

It is an amenable number.

255149898509 is a deficient number, since it is larger than the sum of its proper divisors (27948341491).

255149898509 is a wasteful number, since it uses less digits than its factorization.

255149898509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48928.

The product of its (nonzero) digits is 46656000, while the sum is 65.

The spelling of 255149898509 in words is "two hundred fifty-five billion, one hundred forty-nine million, eight hundred ninety-eight thousand, five hundred nine".