61131443363 has 2 divisors, whose sum is σ = 61131443364. Its totient is φ = 61131443362.

The previous prime is 61131443357. The next prime is 61131443411. The reversal of 61131443363 is 36334413116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61131443363 - 2³⁴ = 43951574179 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (61131449363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30565721681 + 30565721682.

It is an arithmetic number, because the mean of its divisors is an integer number (30565721682).

Almost surely, 2^61131443363 is an apocalyptic number.

61131443363 is a deficient number, since it is larger than the sum of its proper divisors (1).

61131443363 is an equidigital number, since it uses as much as digits as its factorization.

61131443363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 35.

Adding to 61131443363 its reverse (36334413116), we get a palindrome (97465856479).

The spelling of 61131443363 in words is "sixty-one billion, one hundred thirty-one million, four hundred forty-three thousand, three hundred sixty-three".