207138152461 has 2 divisors, whose sum is σ = 207138152462. Its totient is φ = 207138152460.

The previous prime is 207138152447. The next prime is 207138152471. The reversal of 207138152461 is 164251831702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200695040100 + 6443112361 = 447990^2 + 80269^2 .

It is a cyclic number.

It is not a de Polignac number, because 207138152461 - 2¹¹ = 207138150413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (207138152411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103569076230 + 103569076231.

It is an arithmetic number, because the mean of its divisors is an integer number (103569076231).

Almost surely, 2^207138152461 is an apocalyptic number.

It is an amenable number.

207138152461 is a deficient number, since it is larger than the sum of its proper divisors (1).

207138152461 is an equidigital number, since it uses as much as digits as its factorization.

207138152461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 207138152461 in words is "two hundred seven billion, one hundred thirty-eight million, one hundred fifty-two thousand, four hundred sixty-one".