255602390990 has 16 divisors (see below), whose sum is σ = 463596400080. Its totient is φ = 101460490560.

The previous prime is 255602390977. The next prime is 255602391001. The reversal of 255602390990 is 99093206552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97556855 + ... + 97559474.

It is an arithmetic number, because the mean of its divisors is an integer number (28974775005).

Almost surely, 2^255602390990 is an apocalyptic number.

255602390990 is a deficient number, since it is larger than the sum of its proper divisors (207994009090).

255602390990 is a wasteful number, since it uses less digits than its factorization.

255602390990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195116467.

The product of its (nonzero) digits is 1312200, while the sum is 50.

The spelling of 255602390990 in words is "two hundred fifty-five billion, six hundred two million, three hundred ninety thousand, nine hundred ninety".