1550404440442 has 16 divisors (see below), whose sum is σ = 2732181252192. Its totient is φ = 650519345520.

The previous prime is 1550404440439. The next prime is 1550404440443. The reversal of 1550404440442 is 2440444040551.

It is a super-2 number, since 2×1550404440442² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1550404440443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2710496988 + ... + 2710497559.

It is an arithmetic number, because the mean of its divisors is an integer number (170761328262).

Almost surely, 2^{1550404440442} is an apocalyptic number.

1550404440442 is a deficient number, since it is larger than the sum of its proper divisors (1181776811750).

1550404440442 is a wasteful number, since it uses less digits than its factorization.

1550404440442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5420994573.

The product of its (nonzero) digits is 204800, while the sum is 37.

Adding to 1550404440442 its reverse (2440444040551), we get a palindrome (3990848480993).

The spelling of 1550404440442 in words is "one trillion, five hundred fifty billion, four hundred four million, four hundred forty thousand, four hundred forty-two".