1145503743272 has 16 divisors (see below), whose sum is σ = 2454650878560. Its totient is φ = 490930175664.

The previous prime is 1145503743221. The next prime is 1145503743289. The reversal of 1145503743272 is 2723473055411.

It is a happy 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, 10227711938 + ... + 10227712049.

It is an arithmetic number, because the mean of its divisors is an integer number (153415679910).

Almost surely, 2^{1145503743272} is an apocalyptic number.

It is an amenable number.

1145503743272 is an abundant number, since it is smaller than the sum of its proper divisors (1309147135288).

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

1145503743272 is a wasteful number, since it uses less digits than its factorization.

1145503743272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20455424000 (or 20455423996 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 44.

Adding to 1145503743272 its reverse (2723473055411), we get a palindrome (3868976798683).

The spelling of 1145503743272 in words is "one trillion, one hundred forty-five billion, five hundred three million, seven hundred forty-three thousand, two hundred seventy-two".