7775275746157 has 2 divisors, whose sum is σ = 7775275746158. Its totient is φ = 7775275746156.

The previous prime is 7775275746103. The next prime is 7775275746193. The reversal of 7775275746157 is 7516475725777.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7748284213476 + 26991532681 = 2783574^2 + 164291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7775275746157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7775275746257) 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, 3887637873078 + 3887637873079.

It is an arithmetic number, because the mean of its divisors is an integer number (3887637873079).

Almost surely, 2^{7775275746157} is an apocalyptic number.

It is an amenable number.

7775275746157 is a deficient number, since it is larger than the sum of its proper divisors (1).

7775275746157 is an equidigital number, since it uses as much as digits as its factorization.

7775275746157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705894000, while the sum is 70.

The spelling of 7775275746157 in words is "seven trillion, seven hundred seventy-five billion, two hundred seventy-five million, seven hundred forty-six thousand, one hundred fifty-seven".