105377646505 has 4 divisors (see below), whose sum is σ = 126453175812. Its totient is φ = 84302117200.

The previous prime is 105377646503. The next prime is 105377646529. The reversal of 105377646505 is 505646773501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21256765209 + 84120881296 = 145797^2 + 290036^2 .

It is not a de Polignac number, because 105377646505 - 2¹ = 105377646503 is a prime.

It is a super-2 number, since 2×105377646505² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105377646503) 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, 10537764646 + ... + 10537764655.

It is an arithmetic number, because the mean of its divisors is an integer number (31613293953).

Almost surely, 2^105377646505 is an apocalyptic number.

It is an amenable number.

105377646505 is a deficient number, since it is larger than the sum of its proper divisors (21075529307).

105377646505 is an equidigital number, since it uses as much as digits as its factorization.

105377646505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21075529306.

The product of its (nonzero) digits is 2646000, while the sum is 49.

The spelling of 105377646505 in words is "one hundred five billion, three hundred seventy-seven million, six hundred forty-six thousand, five hundred five".