105611051100551 has 4 divisors (see below), whose sum is σ = 105761708806104. Its totient is φ = 105460393395000.

The previous prime is 105611051100521. The next prime is 105611051100559. The reversal of 105611051100551 is 155001150116501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105611051100551 is a prime.

It is a super-2 number, since 2×105611051100551² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105611051100559) 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, 75328851725 + ... + 75328853126.

It is an arithmetic number, because the mean of its divisors is an integer number (26440427201526).

Almost surely, 2^{105611051100551} is an apocalyptic number.

105611051100551 is a deficient number, since it is larger than the sum of its proper divisors (150657705553).

105611051100551 is an equidigital number, since it uses as much as digits as its factorization.

105611051100551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150657705552.

The product of its (nonzero) digits is 3750, while the sum is 32.

The spelling of 105611051100551 in words is "one hundred five trillion, six hundred eleven billion, fifty-one million, one hundred thousand, five hundred fifty-one".