699669212149 has 2 divisors, whose sum is σ = 699669212150. Its totient is φ = 699669212148.

The previous prime is 699669212131. The next prime is 699669212189. The reversal of 699669212149 is 941212966996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 685016109649 + 14653102500 = 827657^2 + 121050^2 .

It is a cyclic number.

It is not a de Polignac number, because 699669212149 - 2¹³ = 699669203957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699669212119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349834606074 + 349834606075.

It is an arithmetic number, because the mean of its divisors is an integer number (349834606075).

Almost surely, 2^699669212149 is an apocalyptic number.

It is an amenable number.

699669212149 is a deficient number, since it is larger than the sum of its proper divisors (1).

699669212149 is an equidigital number, since it uses as much as digits as its factorization.

699669212149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22674816, while the sum is 64.

The spelling of 699669212149 in words is "six hundred ninety-nine billion, six hundred sixty-nine million, two hundred twelve thousand, one hundred forty-nine".