1549396541041 has 2 divisors, whose sum is σ = 1549396541042. Its totient is φ = 1549396541040.

The previous prime is 1549396541039. The next prime is 1549396541081. The reversal of 1549396541041 is 1401456939451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1394002901041 + 155393640000 = 1180679^2 + 394200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1549396541041 - 2¹ = 1549396541039 is a prime.

Together with 1549396541039, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1549396541041.

It is not a weakly prime, because it can be changed into another prime (1549396541081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 774698270520 + 774698270521.

It is an arithmetic number, because the mean of its divisors is an integer number (774698270521).

Almost surely, 2^{1549396541041} is an apocalyptic number.

It is an amenable number.

1549396541041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1549396541041 is an equidigital number, since it uses as much as digits as its factorization.

1549396541041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 1549396541041 in words is "one trillion, five hundred forty-nine billion, three hundred ninety-six million, five hundred forty-one thousand, forty-one".