105108572981 has 2 divisors, whose sum is σ = 105108572982. Its totient is φ = 105108572980.

The previous prime is 105108572951. The next prime is 105108573079. The reversal of 105108572981 is 189275801501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104526123025 + 582449956 = 323305^2 + 24134^2 .

It is a cyclic number.

It is not a de Polignac number, because 105108572981 - 2¹⁸ = 105108310837 is a prime.

It is a super-2 number, since 2×105108572981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105108572911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52554286490 + 52554286491.

It is an arithmetic number, because the mean of its divisors is an integer number (52554286491).

Almost surely, 2^105108572981 is an apocalyptic number.

It is an amenable number.

105108572981 is a deficient number, since it is larger than the sum of its proper divisors (1).

105108572981 is an equidigital number, since it uses as much as digits as its factorization.

105108572981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 47.

The spelling of 105108572981 in words is "one hundred five billion, one hundred eight million, five hundred seventy-two thousand, nine hundred eighty-one".