245574120017669 has 2 divisors, whose sum is σ = 245574120017670. Its totient is φ = 245574120017668.

The previous prime is 245574120017663. The next prime is 245574120017687. The reversal of 245574120017669 is 966710021475542.

245574120017669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166341637022500 + 79232482995169 = 12897350^2 + 8901263^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245574120017669 is a prime.

It is a super-2 number, since 2×245574120017669² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245574120017663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122787060008834 + 122787060008835.

It is an arithmetic number, because the mean of its divisors is an integer number (122787060008835).

Almost surely, 2^{245574120017669} is an apocalyptic number.

It is an amenable number.

245574120017669 is a deficient number, since it is larger than the sum of its proper divisors (1).

245574120017669 is an equidigital number, since it uses as much as digits as its factorization.

245574120017669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25401600, while the sum is 59.

The spelling of 245574120017669 in words is "two hundred forty-five trillion, five hundred seventy-four billion, one hundred twenty million, seventeen thousand, six hundred sixty-nine".