16523947907 has 2 divisors, whose sum is σ = 16523947908. Its totient is φ = 16523947906.

The previous prime is 16523947901. The next prime is 16523947939. The reversal of 16523947907 is 70974932561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16523947907 - 2⁸ = 16523947651 is a prime.

It is not a weakly prime, because it can be changed into another prime (16523947901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8261973953 + 8261973954.

It is an arithmetic number, because the mean of its divisors is an integer number (8261973954).

Almost surely, 2^16523947907 is an apocalyptic number.

16523947907 is a deficient number, since it is larger than the sum of its proper divisors (1).

16523947907 is an equidigital number, since it uses as much as digits as its factorization.

16523947907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 53.

The spelling of 16523947907 in words is "sixteen billion, five hundred twenty-three million, nine hundred forty-seven thousand, nine hundred seven".