16670370397 has 2 divisors, whose sum is σ = 16670370398. Its totient is φ = 16670370396.

The previous prime is 16670370383. The next prime is 16670370427. The reversal of 16670370397 is 79307307661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15532387641 + 1137982756 = 124629^2 + 33734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16670370397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16670370397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16670370337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8335185198 + 8335185199.

It is an arithmetic number, because the mean of its divisors is an integer number (8335185199).

Almost surely, 2^16670370397 is an apocalyptic number.

It is an amenable number.

16670370397 is a deficient number, since it is larger than the sum of its proper divisors (1).

16670370397 is an equidigital number, since it uses as much as digits as its factorization.

16670370397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1000188, while the sum is 49.

The spelling of 16670370397 in words is "sixteen billion, six hundred seventy million, three hundred seventy thousand, three hundred ninety-seven".