1145545042457 has 2 divisors, whose sum is σ = 1145545042458. Its totient is φ = 1145545042456.

The previous prime is 1145545042399. The next prime is 1145545042459. The reversal of 1145545042457 is 7542405455411.

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., 676072039696 + 469473002761 = 822236^2 + 685181^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145545042457 - 2¹² = 1145545038361 is a prime.

Together with 1145545042459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1145545042459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572772521228 + 572772521229.

It is an arithmetic number, because the mean of its divisors is an integer number (572772521229).

Almost surely, 2^{1145545042457} is an apocalyptic number.

It is an amenable number.

1145545042457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145545042457 is an equidigital number, since it uses as much as digits as its factorization.

1145545042457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240000, while the sum is 47.

The spelling of 1145545042457 in words is "one trillion, one hundred forty-five billion, five hundred forty-five million, forty-two thousand, four hundred fifty-seven".