104404511551 has 4 divisors (see below), whose sum is σ = 104410214272. Its totient is φ = 104398808832.

The previous prime is 104404511507. The next prime is 104404511591. The reversal of 104404511551 is 155115404401.

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

It is a cyclic number.

It is not a de Polignac number, because 104404511551 - 2¹⁹ = 104403987263 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 (104404511591) 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, 2823810 + ... + 2860543.

It is an arithmetic number, because the mean of its divisors is an integer number (26102553568).

Almost surely, 2^104404511551 is an apocalyptic number.

104404511551 is a deficient number, since it is larger than the sum of its proper divisors (5702721).

104404511551 is an equidigital number, since it uses as much as digits as its factorization.

104404511551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5702720.

The product of its (nonzero) digits is 8000, while the sum is 31.

Adding to 104404511551 its reverse (155115404401), we get a palindrome (259519915952).

The spelling of 104404511551 in words is "one hundred four billion, four hundred four million, five hundred eleven thousand, five hundred fifty-one".