1123743517272 has 48 divisors (see below), whose sum is σ = 3046246599240. Its totient is φ = 374239686528.

The previous prime is 1123743517271. The next prime is 1123743517289. The reversal of 1123743517272 is 2727153473211.

1123743517272 is a `hidden beast` number, since 1 + 1 + 2 + 374 + 3 + 5 + 1 + 7 + 272 = 666.

It is a super-2 number, since 2×1123743517272² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123743517271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7034758 + ... + 7192725.

Almost surely, 2^{1123743517272} is an apocalyptic number.

1123743517272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123743517272 is an abundant number, since it is smaller than the sum of its proper divisors (1922503081968).

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

1123743517272 is a wasteful number, since it uses less digits than its factorization.

1123743517272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14228592 (or 14228585 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The spelling of 1123743517272 in words is "one trillion, one hundred twenty-three billion, seven hundred forty-three million, five hundred seventeen thousand, two hundred seventy-two".