1255803468890 has 8 divisors (see below), whose sum is σ = 2260446244020. Its totient is φ = 502321387552.

The previous prime is 1255803468853. The next prime is 1255803468901. The reversal of 1255803468890 is 988643085521.

It can be written as a sum of positive squares in 2 ways, for example, as 1239452476249 + 16350992641 = 1113307^2 + 127871^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62790173435 + ... + 62790173454.

Almost surely, 2^{1255803468890} is an apocalyptic number.

1255803468890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255803468890 is a deficient number, since it is larger than the sum of its proper divisors (1004642775130).

1255803468890 is a wasteful number, since it uses less digits than its factorization.

1255803468890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125580346896.

The product of its (nonzero) digits is 16588800, while the sum is 59.

The spelling of 1255803468890 in words is "one trillion, two hundred fifty-five billion, eight hundred three million, four hundred sixty-eight thousand, eight hundred ninety".