1296448163541 has 12 divisors (see below), whose sum is σ = 1889827599660. Its totient is φ = 856369428480.

The previous prime is 1296448163503. The next prime is 1296448163579. The reversal of 1296448163541 is 1453618446921.

1296448163541 is a `hidden beast` number, since 1 + 2 + 9 + 64 + 481 + 63 + 5 + 41 = 666.

It is an interprime number because it is at equal distance from previous prime (1296448163503) and next prime (1296448163579).

It can be written as a sum of positive squares in 2 ways, for example, as 866256471441 + 430191692100 = 930729^2 + 655890^2 .

It is not a de Polignac number, because 1296448163541 - 2⁹ = 1296448163029 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296448163501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 660777900 + ... + 660779861.

It is an arithmetic number, because the mean of its divisors is an integer number (157485633305).

Almost surely, 2^{1296448163541} is an apocalyptic number.

It is an amenable number.

1296448163541 is a deficient number, since it is larger than the sum of its proper divisors (593379436119).

1296448163541 is a wasteful number, since it uses less digits than its factorization.

1296448163541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321557876 (or 1321557873 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 1296448163541 in words is "one trillion, two hundred ninety-six billion, four hundred forty-eight million, one hundred sixty-three thousand, five hundred forty-one".