1253140761577 has 2 divisors, whose sum is σ = 1253140761578. Its totient is φ = 1253140761576.

The previous prime is 1253140761569. The next prime is 1253140761601. The reversal of 1253140761577 is 7751670413521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1222537107856 + 30603653721 = 1105684^2 + 174939^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253140761577 - 2³ = 1253140761569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1253140761577.

It is not a weakly prime, because it can be changed into another prime (1253140761517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626570380788 + 626570380789.

It is an arithmetic number, because the mean of its divisors is an integer number (626570380789).

Almost surely, 2^{1253140761577} is an apocalyptic number.

It is an amenable number.

1253140761577 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253140761577 is an equidigital number, since it uses as much as digits as its factorization.

1253140761577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1234800, while the sum is 49.

The spelling of 1253140761577 in words is "one trillion, two hundred fifty-three billion, one hundred forty million, seven hundred sixty-one thousand, five hundred seventy-seven".