100056105745 has 4 divisors (see below), whose sum is σ = 120067326900. Its totient is φ = 80044884592.

The previous prime is 100056105733. The next prime is 100056105757. The reversal of 100056105745 is 547501650001.

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 (100056105733) and next prime (100056105757).

It can be written as a sum of positive squares in 2 ways, for example, as 15447258369 + 84608847376 = 124287^2 + 290876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100056105745 is a prime.

It is a super-2 number, since 2×100056105745² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100056105745.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10005610570 + ... + 10005610579.

It is an arithmetic number, because the mean of its divisors is an integer number (30016831725).

Almost surely, 2^100056105745 is an apocalyptic number.

It is an amenable number.

100056105745 is a deficient number, since it is larger than the sum of its proper divisors (20011221155).

100056105745 is an equidigital number, since it uses as much as digits as its factorization.

100056105745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20011221154.

The product of its (nonzero) digits is 21000, while the sum is 34.

Adding to 100056105745 its reverse (547501650001), we get a palindrome (647557755746).

The spelling of 100056105745 in words is "one hundred billion, fifty-six million, one hundred five thousand, seven hundred forty-five".