61116263433431 has 2 divisors, whose sum is σ = 61116263433432. Its totient is φ = 61116263433430.

The previous prime is 61116263433307. The next prime is 61116263433487. The reversal of 61116263433431 is 13433436261116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61116263433431 - 2³⁰ = 61115189691607 is a prime.

It is a super-2 number, since 2×61116263433431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61116263433031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30558131716715 + 30558131716716.

It is an arithmetic number, because the mean of its divisors is an integer number (30558131716716).

Almost surely, 2^{61116263433431} is an apocalyptic number.

61116263433431 is a deficient number, since it is larger than the sum of its proper divisors (1).

61116263433431 is an equidigital number, since it uses as much as digits as its factorization.

61116263433431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 44.

Adding to 61116263433431 its reverse (13433436261116), we get a palindrome (74549699694547).

The spelling of 61116263433431 in words is "sixty-one trillion, one hundred sixteen billion, two hundred sixty-three million, four hundred thirty-three thousand, four hundred thirty-one".