1131315045457 has 2 divisors, whose sum is σ = 1131315045458. Its totient is φ = 1131315045456.

The previous prime is 1131315045397. The next prime is 1131315045481. The reversal of 1131315045457 is 7545405131311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 842826819136 + 288488226321 = 918056^2 + 537111^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131315045457 - 2³⁹ = 581559231569 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131315045257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565657522728 + 565657522729.

It is an arithmetic number, because the mean of its divisors is an integer number (565657522729).

Almost surely, 2^{1131315045457} is an apocalyptic number.

It is an amenable number.

1131315045457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131315045457 is an equidigital number, since it uses as much as digits as its factorization.

1131315045457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 1131315045457 in words is "one trillion, one hundred thirty-one billion, three hundred fifteen million, forty-five thousand, four hundred fifty-seven".