105485137381 has 4 divisors (see below), whose sum is σ = 113599378732. Its totient is φ = 97370896032.

The previous prime is 105485137339. The next prime is 105485137393. The reversal of 105485137381 is 183731584501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 183731584501 = 157907 ⋅1163543.

It can be written as a sum of positive squares in 2 ways, for example, as 12980956356 + 92504181025 = 113934^2 + 304145^2 .

It is a cyclic number.

It is not a de Polignac number, because 105485137381 - 2¹¹ = 105485135333 is a prime.

It is a super-2 number, since 2×105485137381² (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 (105485137321) 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, 4057120656 + ... + 4057120681.

It is an arithmetic number, because the mean of its divisors is an integer number (28399844683).

Almost surely, 2^105485137381 is an apocalyptic number.

It is an amenable number.

105485137381 is a deficient number, since it is larger than the sum of its proper divisors (8114241351).

105485137381 is an equidigital number, since it uses as much as digits as its factorization.

105485137381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8114241350.

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 105485137381 in words is "one hundred five billion, four hundred eighty-five million, one hundred thirty-seven thousand, three hundred eighty-one".