1550104020111 has 4 divisors (see below), whose sum is σ = 2066805360152. Its totient is φ = 1033402680072.

The previous prime is 1550104020061. The next prime is 1550104020131. The reversal of 1550104020111 is 1110204010551.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1550104020111 - 2⁷ = 1550104019983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550104020131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258350670016 + ... + 258350670021.

It is an arithmetic number, because the mean of its divisors is an integer number (516701340038).

Almost surely, 2^{1550104020111} is an apocalyptic number.

1550104020111 is a deficient number, since it is larger than the sum of its proper divisors (516701340041).

1550104020111 is an equidigital number, since it uses as much as digits as its factorization.

1550104020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516701340040.

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 1550104020111 its reverse (1110204010551), we get a palindrome (2660308030662).

The spelling of 1550104020111 in words is "one trillion, five hundred fifty billion, one hundred four million, twenty thousand, one hundred eleven".