105710115521 has 2 divisors, whose sum is σ = 105710115522. Its totient is φ = 105710115520.

The previous prime is 105710115509. The next prime is 105710115551. The reversal of 105710115521 is 125511017501.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91557682225 + 14152433296 = 302585^2 + 118964^2 .

It is a cyclic number.

It is not a de Polignac number, because 105710115521 - 2²⁶ = 105643006657 is a prime.

It is a super-2 number, since 2×105710115521² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105710115551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52855057760 + 52855057761.

It is an arithmetic number, because the mean of its divisors is an integer number (52855057761).

Almost surely, 2^105710115521 is an apocalyptic number.

It is an amenable number.

105710115521 is a deficient number, since it is larger than the sum of its proper divisors (1).

105710115521 is an equidigital number, since it uses as much as digits as its factorization.

105710115521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1750, while the sum is 29.

The spelling of 105710115521 in words is "one hundred five billion, seven hundred ten million, one hundred fifteen thousand, five hundred twenty-one".