1255217466644 has 12 divisors (see below), whose sum is σ = 2233861593600. Its totient is φ = 616971297048.

The previous prime is 1255217466583. The next prime is 1255217466653. The reversal of 1255217466644 is 4466647125521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2659358804 + ... + 2659359275.

It is an arithmetic number, because the mean of its divisors is an integer number (186155132800).

Almost surely, 2^{1255217466644} is an apocalyptic number.

It is an amenable number.

1255217466644 is a deficient number, since it is larger than the sum of its proper divisors (978644126956).

1255217466644 is a wasteful number, since it uses less digits than its factorization.

1255217466644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5318718142 (or 5318718140 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 53.

The spelling of 1255217466644 in words is "one trillion, two hundred fifty-five billion, two hundred seventeen million, four hundred sixty-six thousand, six hundred forty-four".