105055561051 has 4 divisors (see below), whose sum is σ = 120063498352. Its totient is φ = 90047623752.

The previous prime is 105055561003. The next prime is 105055561067. The reversal of 105055561051 is 150165550501.

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 105055561051 - 2¹⁹ = 105055036763 is a prime.

It is a super-2 number, since 2×105055561051² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105055560998 and 105055561016.

It is not an unprimeable number, because it can be changed into a prime (105055564051) 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, 7503968640 + ... + 7503968653.

It is an arithmetic number, because the mean of its divisors is an integer number (30015874588).

Almost surely, 2^105055561051 is an apocalyptic number.

105055561051 is a deficient number, since it is larger than the sum of its proper divisors (15007937301).

105055561051 is an equidigital number, since it uses as much as digits as its factorization.

105055561051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15007937300.

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 105055561051 in words is "one hundred five billion, fifty-five million, five hundred sixty-one thousand, fifty-one".