1255117589943 has 8 divisors (see below), whose sum is σ = 1912560137088. Its totient is φ = 717210051384.

The previous prime is 1255117589927. The next prime is 1255117589981. The reversal of 1255117589943 is 3499857115521.

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

It is not a de Polignac number, because 1255117589943 - 2⁴ = 1255117589927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255117599943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29883752121 + ... + 29883752162.

It is an arithmetic number, because the mean of its divisors is an integer number (239070017136).

Almost surely, 2^{1255117589943} is an apocalyptic number.

1255117589943 is a deficient number, since it is larger than the sum of its proper divisors (657442547145).

1255117589943 is an equidigital number, since it uses as much as digits as its factorization.

1255117589943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59767504293.

The product of its digits is 13608000, while the sum is 60.

The spelling of 1255117589943 in words is "one trillion, two hundred fifty-five billion, one hundred seventeen million, five hundred eighty-nine thousand, nine hundred forty-three".