61898382011 has 2 divisors, whose sum is σ = 61898382012. Its totient is φ = 61898382010.

The previous prime is 61898381999. The next prime is 61898382041. The reversal of 61898382011 is 11028389816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61898382011 - 2¹⁰ = 61898380987 is a prime.

It is not a weakly prime, because it can be changed into another prime (61898382041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30949191005 + 30949191006.

It is an arithmetic number, because the mean of its divisors is an integer number (30949191006).

Almost surely, 2^61898382011 is an apocalyptic number.

61898382011 is a deficient number, since it is larger than the sum of its proper divisors (1).

61898382011 is an equidigital number, since it uses as much as digits as its factorization.

61898382011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 47.

The spelling of 61898382011 in words is "sixty-one billion, eight hundred ninety-eight million, three hundred eighty-two thousand, eleven".