61182250441 has 4 divisors (see below), whose sum is σ = 65888577412. Its totient is φ = 56475923472.

The previous prime is 61182250397. The next prime is 61182250477. The reversal of 61182250441 is 14405228116.

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 4756998841 + 56425251600 = 68971^2 + 237540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61182250441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61182250397 and 61182250406.

It is not an unprimeable number, because it can be changed into a prime (61182250541) 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, 2353163466 + ... + 2353163491.

It is an arithmetic number, because the mean of its divisors is an integer number (16472144353).

Almost surely, 2^61182250441 is an apocalyptic number.

It is an amenable number.

61182250441 is a deficient number, since it is larger than the sum of its proper divisors (4706326971).

61182250441 is a wasteful number, since it uses less digits than its factorization.

61182250441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4706326970.

The product of its (nonzero) digits is 15360, while the sum is 34.

Adding to 61182250441 its reverse (14405228116), we get a palindrome (75587478557).

The spelling of 61182250441 in words is "sixty-one billion, one hundred eighty-two million, two hundred fifty thousand, four hundred forty-one".