255361194509 has 16 divisors (see below), whose sum is σ = 258482767872. Its totient is φ = 252258608448.

The previous prime is 255361194317. The next prime is 255361194593. The reversal of 255361194509 is 905491163552.

It is a cyclic number.

It is not a de Polignac number, because 255361194509 - 2¹⁶ = 255361128973 is a prime.

It is a super-2 number, since 2×255361194509² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255361194709) 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, 54065222 + ... + 54069944.

It is an arithmetic number, because the mean of its divisors is an integer number (16155172992).

Almost surely, 2^255361194509 is an apocalyptic number.

It is an amenable number.

255361194509 is a deficient number, since it is larger than the sum of its proper divisors (3121573363).

255361194509 is a wasteful number, since it uses less digits than its factorization.

255361194509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6596.

The product of its (nonzero) digits is 1458000, while the sum is 50.

The spelling of 255361194509 in words is "two hundred fifty-five billion, three hundred sixty-one million, one hundred ninety-four thousand, five hundred nine".