669669481037 has 2 divisors, whose sum is σ = 669669481038. Its totient is φ = 669669481036.

The previous prime is 669669480979. The next prime is 669669481081. The reversal of 669669481037 is 730184966966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 659426826601 + 10242654436 = 812051^2 + 101206^2 .

It is a cyclic number.

It is not a de Polignac number, because 669669481037 - 2⁶ = 669669480973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669669480037) 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, 334834740518 + 334834740519.

It is an arithmetic number, because the mean of its divisors is an integer number (334834740519).

Almost surely, 2^669669481037 is an apocalyptic number.

It is an amenable number.

669669481037 is a deficient number, since it is larger than the sum of its proper divisors (1).

669669481037 is an equidigital number, since it uses as much as digits as its factorization.

669669481037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70543872, while the sum is 65.

The spelling of 669669481037 in words is "six hundred sixty-nine billion, six hundred sixty-nine million, four hundred eighty-one thousand, thirty-seven".