11611447061 has 4 divisors (see below), whose sum is σ = 11662152300. Its totient is φ = 11560741824.

The previous prime is 11611447039. The next prime is 11611447063. The reversal of 11611447061 is 16074411611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11362280836 + 249166225 = 106594^2 + 15785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11611447061 is a prime.

It is a super-3 number, since 3×11611447061³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11611447063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25352276 + ... + 25352733.

It is an arithmetic number, because the mean of its divisors is an integer number (2915538075).

Almost surely, 2^11611447061 is an apocalyptic number.

It is an amenable number.

11611447061 is a deficient number, since it is larger than the sum of its proper divisors (50705239).

11611447061 is an equidigital number, since it uses as much as digits as its factorization.

11611447061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50705238.

The product of its (nonzero) digits is 4032, while the sum is 32.

Adding to 11611447061 its reverse (16074411611), we get a palindrome (27685858672).

The spelling of 11611447061 in words is "eleven billion, six hundred eleven million, four hundred forty-seven thousand, sixty-one".