10061981999 has 2 divisors, whose sum is σ = 10061982000. Its totient is φ = 10061981998.

The previous prime is 10061981987. The next prime is 10061982043. The reversal of 10061981999 is 99918916001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10061981999 - 2¹² = 10061977903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10061981999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10061981929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5030990999 + 5030991000.

It is an arithmetic number, because the mean of its divisors is an integer number (5030991000).

Almost surely, 2^10061981999 is an apocalyptic number.

10061981999 is a deficient number, since it is larger than the sum of its proper divisors (1).

10061981999 is an equidigital number, since it uses as much as digits as its factorization.

10061981999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 53.

The spelling of 10061981999 in words is "ten billion, sixty-one million, nine hundred eighty-one thousand, nine hundred ninety-nine".