16725646739 has 2 divisors, whose sum is σ = 16725646740. Its totient is φ = 16725646738.

The previous prime is 16725646733. The next prime is 16725646757. The reversal of 16725646739 is 93764652761.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16725646739 is a prime.

It is not a weakly prime, because it can be changed into another prime (16725646733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8362823369 + 8362823370.

It is an arithmetic number, because the mean of its divisors is an integer number (8362823370).

Almost surely, 2^16725646739 is an apocalyptic number.

16725646739 is a deficient number, since it is larger than the sum of its proper divisors (1).

16725646739 is an equidigital number, since it uses as much as digits as its factorization.

16725646739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11430720, while the sum is 56.

The spelling of 16725646739 in words is "sixteen billion, seven hundred twenty-five million, six hundred forty-six thousand, seven hundred thirty-nine".