61983087211 has 2 divisors, whose sum is σ = 61983087212. Its totient is φ = 61983087210.

The previous prime is 61983087197. The next prime is 61983087217. The reversal of 61983087211 is 11278038916.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61983087211 - 2²¹ = 61980990059 is a prime.

It is not a weakly prime, because it can be changed into another prime (61983087217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30991543605 + 30991543606.

It is an arithmetic number, because the mean of its divisors is an integer number (30991543606).

Almost surely, 2^61983087211 is an apocalyptic number.

61983087211 is a deficient number, since it is larger than the sum of its proper divisors (1).

61983087211 is an equidigital number, since it uses as much as digits as its factorization.

61983087211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 61983087211 in words is "sixty-one billion, nine hundred eighty-three million, eighty-seven thousand, two hundred eleven".