1146405545281 has 4 divisors (see below), whose sum is σ = 1149653153412. Its totient is φ = 1143157937152.

The previous prime is 1146405545279. The next prime is 1146405545291. The reversal of 1146405545281 is 1825455046411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 355942298881 + 790463246400 = 596609^2 + 889080^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146405545281 - 2¹ = 1146405545279 is a prime.

It is a super-2 number, since 2×1146405545281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1146405545291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623803536 + ... + 1623804241.

It is an arithmetic number, because the mean of its divisors is an integer number (287413288353).

Almost surely, 2^{1146405545281} is an apocalyptic number.

It is an amenable number.

1146405545281 is a deficient number, since it is larger than the sum of its proper divisors (3247608131).

1146405545281 is an equidigital number, since it uses as much as digits as its factorization.

1146405545281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247608130.

The product of its (nonzero) digits is 768000, while the sum is 46.

The spelling of 1146405545281 in words is "one trillion, one hundred forty-six billion, four hundred five million, five hundred forty-five thousand, two hundred eighty-one".