1275133937537 has 2 divisors, whose sum is σ = 1275133937538. Its totient is φ = 1275133937536.

The previous prime is 1275133937477. The next prime is 1275133937579. The reversal of 1275133937537 is 7357393315721.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1273322669056 + 1811268481 = 1128416^2 + 42559^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275133937537 - 2³⁸ = 1000256030593 is a prime.

It is a super-2 number, since 2×1275133937537² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1275133937437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637566968768 + 637566968769.

It is an arithmetic number, because the mean of its divisors is an integer number (637566968769).

Almost surely, 2^{1275133937537} is an apocalyptic number.

It is an amenable number.

1275133937537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275133937537 is an equidigital number, since it uses as much as digits as its factorization.

1275133937537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12502350, while the sum is 56.

The spelling of 1275133937537 in words is "one trillion, two hundred seventy-five billion, one hundred thirty-three million, nine hundred thirty-seven thousand, five hundred thirty-seven".