1258889256668 has 24 divisors (see below), whose sum is σ = 2264237002944. Its totient is φ = 611989041600.

The previous prime is 1258889256659. The next prime is 1258889256673. The reversal of 1258889256668 is 8666529888521.

It is a Harshad number since it is a multiple of its sum of digits (74).

It is a junction number, because it is equal to n+sod(n) for n = 1258889256595 and 1258889256604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2875268 + ... + 3284043.

It is an arithmetic number, because the mean of its divisors is an integer number (94343208456).

Almost surely, 2^{1258889256668} is an apocalyptic number.

It is an amenable number.

1258889256668 is a deficient number, since it is larger than the sum of its proper divisors (1005347746276).

1258889256668 is a wasteful number, since it uses less digits than its factorization.

1258889256668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6160733 (or 6160731 counting only the distinct ones).

The product of its digits is 796262400, while the sum is 74.

The spelling of 1258889256668 in words is "one trillion, two hundred fifty-eight billion, eight hundred eighty-nine million, two hundred fifty-six thousand, six hundred sixty-eight".