1272018554244 has 27 divisors (see below), whose sum is σ = 3215397339973. Its totient is φ = 424003929072.

The previous prime is 1272018554227. The next prime is 1272018554251. The reversal of 1272018554244 is 4424558102721.

The square root of 1272018554244 is 1127838.

It is a perfect power (a square), and thus also a powerful number.

1272018554244 is a `hidden beast` number, since 1 + 2 + 7 + 20 + 1 + 85 + 542 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1258951320900 + 13067233344 = 1122030^2 + 114312^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1272018554244.

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 8 ways as a sum of consecutive naturals, for example, 6673042 + ... + 6861014.

Almost surely, 2^{1272018554244} is an apocalyptic number.

1272018554244 is the 1127838-th square number.

It is an amenable number.

1272018554244 is an abundant number, since it is smaller than the sum of its proper divisors (1943378785729).

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

1272018554244 is an frugal number, since it uses more digits than its factorization.

1272018554244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375956 (or 187978 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 45.

The spelling of 1272018554244 in words is "one trillion, two hundred seventy-two billion, eighteen million, five hundred fifty-four thousand, two hundred forty-four".