404561154301649 has 2 divisors, whose sum is σ = 404561154301650. Its totient is φ = 404561154301648.

The previous prime is 404561154301543. The next prime is 404561154301663. The reversal of 404561154301649 is 946103451165404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325517372410000 + 79043781891649 = 18042100^2 + 8890657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404561154301649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404561154301649.

It is not a weakly prime, because it can be changed into another prime (404561154301679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202280577150824 + 202280577150825.

It is an arithmetic number, because the mean of its divisors is an integer number (202280577150825).

Almost surely, 2^{404561154301649} is an apocalyptic number.

It is an amenable number.

404561154301649 is a deficient number, since it is larger than the sum of its proper divisors (1).

404561154301649 is an equidigital number, since it uses as much as digits as its factorization.

404561154301649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6220800, while the sum is 53.

The spelling of 404561154301649 in words is "four hundred four trillion, five hundred sixty-one billion, one hundred fifty-four million, three hundred one thousand, six hundred forty-nine".