105540624551 has 4 divisors (see below), whose sum is σ = 105560020152. Its totient is φ = 105521228952.

The previous prime is 105540624533. The next prime is 105540624569. The reversal of 105540624551 is 155426045501.

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

It is an interprime number because it is at equal distance from previous prime (105540624533) and next prime (105540624569).

It is a cyclic number.

It is not a de Polignac number, because 105540624551 - 2¹⁰ = 105540623527 is a prime.

It is a super-2 number, since 2×105540624551² (a number of 23 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 (105540624521) 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, 9689636 + ... + 9700521.

It is an arithmetic number, because the mean of its divisors is an integer number (26390005038).

Almost surely, 2^105540624551 is an apocalyptic number.

105540624551 is a deficient number, since it is larger than the sum of its proper divisors (19395601).

105540624551 is an equidigital number, since it uses as much as digits as its factorization.

105540624551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19395600.

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 105540624551 in words is "one hundred five billion, five hundred forty million, six hundred twenty-four thousand, five hundred fifty-one".