1272425661724 has 24 divisors (see below), whose sum is σ = 2632604819040. Its totient is φ = 526520963136.

The previous prime is 1272425661691. The next prime is 1272425661769. The reversal of 1272425661724 is 4271665242721.

It is a super-2 number, since 2×1272425661724² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 783512527 + ... + 783514150.

It is an arithmetic number, because the mean of its divisors is an integer number (109691867460).

Almost surely, 2^{1272425661724} is an apocalyptic number.

1272425661724 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1272425661724 is an abundant number, since it is smaller than the sum of its proper divisors (1360179157316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1272425661724 is a wasteful number, since it uses less digits than its factorization.

1272425661724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567026717 (or 1567026715 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 49.

The spelling of 1272425661724 in words is "one trillion, two hundred seventy-two billion, four hundred twenty-five million, six hundred sixty-one thousand, seven hundred twenty-four".