1272148855444 has 24 divisors (see below), whose sum is σ = 2228571072000. Its totient is φ = 635414613600.

The previous prime is 1272148855403. The next prime is 1272148855457. The reversal of 1272148855444 is 4445588412721.

It is a happy number.

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, 15168177 + ... + 15251815.

It is an arithmetic number, because the mean of its divisors is an integer number (92857128000).

Almost surely, 2^{1272148855444} is an apocalyptic number.

It is an amenable number.

1272148855444 is a deficient number, since it is larger than the sum of its proper divisors (956422216556).

1272148855444 is a wasteful number, since it uses less digits than its factorization.

1272148855444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87543 (or 87541 counting only the distinct ones).

The product of its digits is 11468800, while the sum is 55.

The spelling of 1272148855444 in words is "one trillion, two hundred seventy-two billion, one hundred forty-eight million, eight hundred fifty-five thousand, four hundred forty-four".