16121187937 has 2 divisors, whose sum is σ = 16121187938. Its totient is φ = 16121187936.

The previous prime is 16121187917. The next prime is 16121187947. The reversal of 16121187937 is 73978112161.

16121187937 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11503849536 + 4617338401 = 107256^2 + 67951^2 .

It is a cyclic number.

It is not a de Polignac number, because 16121187937 - 2⁷ = 16121187809 is a prime.

It is not a weakly prime, because it can be changed into another prime (16121187917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8060593968 + 8060593969.

It is an arithmetic number, because the mean of its divisors is an integer number (8060593969).

Almost surely, 2^16121187937 is an apocalyptic number.

It is an amenable number.

16121187937 is a deficient number, since it is larger than the sum of its proper divisors (1).

16121187937 is an equidigital number, since it uses as much as digits as its factorization.

16121187937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 46.

The spelling of 16121187937 in words is "sixteen billion, one hundred twenty-one million, one hundred eighty-seven thousand, nine hundred thirty-seven".