691047150223 has 2 divisors, whose sum is σ = 691047150224. Its totient is φ = 691047150222.

The previous prime is 691047150107. The next prime is 691047150251. The reversal of 691047150223 is 322051740196.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 691047150223 - 2¹⁷ = 691047019151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (691047150023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345523575111 + 345523575112.

It is an arithmetic number, because the mean of its divisors is an integer number (345523575112).

Almost surely, 2^691047150223 is an apocalyptic number.

691047150223 is a deficient number, since it is larger than the sum of its proper divisors (1).

691047150223 is an equidigital number, since it uses as much as digits as its factorization.

691047150223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 691047150223 in words is "six hundred ninety-one billion, forty-seven million, one hundred fifty thousand, two hundred twenty-three".