16516905739 has 2 divisors, whose sum is σ = 16516905740. Its totient is φ = 16516905738.

The previous prime is 16516905737. The next prime is 16516905773. The reversal of 16516905739 is 93750961561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16516905739 - 2¹ = 16516905737 is a prime.

It is a super-2 number, since 2×16516905739² (a number of 21 digits) contains 22 as substring.

Together with 16516905737, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16516905733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8258452869 + 8258452870.

It is an arithmetic number, because the mean of its divisors is an integer number (8258452870).

Almost surely, 2^16516905739 is an apocalyptic number.

16516905739 is a deficient number, since it is larger than the sum of its proper divisors (1).

16516905739 is an equidigital number, since it uses as much as digits as its factorization.

16516905739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1530900, while the sum is 52.

The spelling of 16516905739 in words is "sixteen billion, five hundred sixteen million, nine hundred five thousand, seven hundred thirty-nine".