1161231572573 has 2 divisors, whose sum is σ = 1161231572574. Its totient is φ = 1161231572572.

The previous prime is 1161231572569. The next prime is 1161231572623. The reversal of 1161231572573 is 3752751321611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 733760133604 + 427471438969 = 856598^2 + 653813^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161231572573 - 2² = 1161231572569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161231572513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580615786286 + 580615786287.

It is an arithmetic number, because the mean of its divisors is an integer number (580615786287).

Almost surely, 2^{1161231572573} is an apocalyptic number.

It is an amenable number.

1161231572573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161231572573 is an equidigital number, since it uses as much as digits as its factorization.

1161231572573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 44.

The spelling of 1161231572573 in words is "one trillion, one hundred sixty-one billion, two hundred thirty-one million, five hundred seventy-two thousand, five hundred seventy-three".