11105051551 has 4 divisors (see below), whose sum is σ = 12114601704. Its totient is φ = 10095501400.

The previous prime is 11105051537. The next prime is 11105051561. The reversal of 11105051551 is 15515050111.

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 11105051551 - 2¹⁹ = 11104527263 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 (11105051501) 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, 504775060 + ... + 504775081.

It is an arithmetic number, because the mean of its divisors is an integer number (3028650426).

Almost surely, 2^11105051551 is an apocalyptic number.

11105051551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11105051551 is a deficient number, since it is larger than the sum of its proper divisors (1009550153).

11105051551 is a wasteful number, since it uses less digits than its factorization.

11105051551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009550152.

The product of its (nonzero) digits is 625, while the sum is 25.

The spelling of 11105051551 in words is "eleven billion, one hundred five million, fifty-one thousand, five hundred fifty-one".