1272201767519 has 2 divisors, whose sum is σ = 1272201767520. Its totient is φ = 1272201767518.

The previous prime is 1272201767509. The next prime is 1272201767527. The reversal of 1272201767519 is 9157671022721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272201767519 is a prime.

It is a super-2 number, since 2×1272201767519² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272201767509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636100883759 + 636100883760.

It is an arithmetic number, because the mean of its divisors is an integer number (636100883760).

Almost surely, 2^{1272201767519} is an apocalyptic number.

1272201767519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272201767519 is an equidigital number, since it uses as much as digits as its factorization.

1272201767519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 740880, while the sum is 50.

The spelling of 1272201767519 in words is "one trillion, two hundred seventy-two billion, two hundred one million, seven hundred sixty-seven thousand, five hundred nineteen".