1155431642404 has 24 divisors (see below), whose sum is σ = 2185639235640. Its totient is φ = 531293697024.

The previous prime is 1155431642377. The next prime is 1155431642437. The reversal of 1155431642404 is 4042461345511.

It can be written as a sum of positive squares in 4 ways, for example, as 60796764900 + 1094634877504 = 246570^2 + 1046248^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 41286829 + ... + 41314804.

It is an arithmetic number, because the mean of its divisors is an integer number (91068301485).

Almost surely, 2^{1155431642404} is an apocalyptic number.

It is an amenable number.

1155431642404 is a deficient number, since it is larger than the sum of its proper divisors (1030207593236).

1155431642404 is a wasteful number, since it uses less digits than its factorization.

1155431642404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82601919 (or 82601917 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

Adding to 1155431642404 its reverse (4042461345511), we get a palindrome (5197892987915).

The spelling of 1155431642404 in words is "one trillion, one hundred fifty-five billion, four hundred thirty-one million, six hundred forty-two thousand, four hundred four".