1275133937477 has 2 divisors, whose sum is σ = 1275133937478. Its totient is φ = 1275133937476.

The previous prime is 1275133937437. The next prime is 1275133937537. The reversal of 1275133937477 is 7747393315721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1062989868196 + 212144069281 = 1031014^2 + 460591^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275133937477 - 2²⁶ = 1275066828613 is a prime.

It is a congruent number.

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, 637566968738 + 637566968739.

It is an arithmetic number, because the mean of its divisors is an integer number (637566968739).

Almost surely, 2^{1275133937477} is an apocalyptic number.

It is an amenable number.

1275133937477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275133937477 is an equidigital number, since it uses as much as digits as its factorization.

1275133937477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23337720, while the sum is 59.

The spelling of 1275133937477 in words is "one trillion, two hundred seventy-five billion, one hundred thirty-three million, nine hundred thirty-seven thousand, four hundred seventy-seven".