1550404440445 has 32 divisors (see below), whose sum is σ = 2222145404928. Its totient is φ = 1015339161408.

The previous prime is 1550404440443. The next prime is 1550404440449. The reversal of 1550404440445 is 5440444040551.

It is a cyclic number.

It is not a de Polignac number, because 1550404440445 - 2¹ = 1550404440443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1550404440398 and 1550404440407.

It is a congruent number.

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

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 967549 + ... + 2009218.

It is an arithmetic number, because the mean of its divisors is an integer number (69442043904).

Almost surely, 2^{1550404440445} is an apocalyptic number.

It is an amenable number.

1550404440445 is a deficient number, since it is larger than the sum of its proper divisors (671740964483).

1550404440445 is a wasteful number, since it uses less digits than its factorization.

1550404440445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977449.

The product of its (nonzero) digits is 512000, while the sum is 40.

Adding to 1550404440445 its reverse (5440444040551), we get a palindrome (6990848480996).

The spelling of 1550404440445 in words is "one trillion, five hundred fifty billion, four hundred four million, four hundred forty thousand, four hundred forty-five".