1174147783561 has 9 divisors (see below), whose sum is σ = 1176407052429. Its totient is φ = 1171892851500.

The previous prime is 1174147783519. The next prime is 1174147783591. The reversal of 1174147783561 is 1653877414711.

The square root of 1174147783561 is 1083581.

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

It is not a de Polignac number, because 1174147783561 - 2⁷ = 1174147783433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1174147783591) by changing a digit.

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, 1117171486 + ... + 1117172536.

Almost surely, 2^{1174147783561} is an apocalyptic number.

1174147783561 is the 1083581-st square number.

1174147783561 is the 541791-st centered octagonal number.

It is an amenable number.

1174147783561 is a deficient number, since it is larger than the sum of its proper divisors (2259268868).

1174147783561 is an frugal number, since it uses more digits than its factorization.

1174147783561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4164 (or 2082 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 55.

The spelling of 1174147783561 in words is "one trillion, one hundred seventy-four billion, one hundred forty-seven million, seven hundred eighty-three thousand, five hundred sixty-one".