207506644949 has 2 divisors, whose sum is σ = 207506644950. Its totient is φ = 207506644948.

The previous prime is 207506644853. The next prime is 207506644999. The reversal of 207506644949 is 949446605702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158040436849 + 49466208100 = 397543^2 + 222410^2 .

It is a cyclic number.

It is not a de Polignac number, because 207506644949 - 2⁸ = 207506644693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 207506644894 and 207506644903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (207506644999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103753322474 + 103753322475.

It is an arithmetic number, because the mean of its divisors is an integer number (103753322475).

Almost surely, 2^207506644949 is an apocalyptic number.

It is an amenable number.

207506644949 is a deficient number, since it is larger than the sum of its proper divisors (1).

207506644949 is an equidigital number, since it uses as much as digits as its factorization.

207506644949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 207506644949 in words is "two hundred seven billion, five hundred six million, six hundred forty-four thousand, nine hundred forty-nine".