61432968089 has 2 divisors, whose sum is σ = 61432968090. Its totient is φ = 61432968088.

The previous prime is 61432968013. The next prime is 61432968131. The reversal of 61432968089 is 98086923416.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48925900864 + 12507067225 = 221192^2 + 111835^2 .

It is a cyclic number.

It is not a de Polignac number, because 61432968089 - 2³² = 57138000793 is a prime.

It is not a weakly prime, because it can be changed into another prime (61432968689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30716484044 + 30716484045.

It is an arithmetic number, because the mean of its divisors is an integer number (30716484045).

Almost surely, 2^61432968089 is an apocalyptic number.

It is an amenable number.

61432968089 is a deficient number, since it is larger than the sum of its proper divisors (1).

61432968089 is an equidigital number, since it uses as much as digits as its factorization.

61432968089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4478976, while the sum is 56.

The spelling of 61432968089 in words is "sixty-one billion, four hundred thirty-two million, nine hundred sixty-eight thousand, eighty-nine".