1148786546521 has 2 divisors, whose sum is σ = 1148786546522. Its totient is φ = 1148786546520.

The previous prime is 1148786546389. The next prime is 1148786546563. The reversal of 1148786546521 is 1256456878411.

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., 925128490896 + 223658055625 = 961836^2 + 472925^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148786546521 - 2³⁹ = 599030732633 is a prime.

It is a super-3 number, since 3×1148786546521³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1148786526521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574393273260 + 574393273261.

It is an arithmetic number, because the mean of its divisors is an integer number (574393273261).

Almost surely, 2^{1148786546521} is an apocalyptic number.

It is an amenable number.

1148786546521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1148786546521 is an equidigital number, since it uses as much as digits as its factorization.

1148786546521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12902400, while the sum is 58.

The spelling of 1148786546521 in words is "one trillion, one hundred forty-eight billion, seven hundred eighty-six million, five hundred forty-six thousand, five hundred twenty-one".