10400645105 has 4 divisors (see below), whose sum is σ = 12480774132. Its totient is φ = 8320516080.

The previous prime is 10400645069. The next prime is 10400645107. The reversal of 10400645105 is 50154600401.

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 3221811121 + 7178833984 = 56761^2 + 84728^2 .

It is not a de Polignac number, because 10400645105 - 2²⁸ = 10132209649 is a prime.

It is a super-2 number, since 2×10400645105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10400645107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040064506 + ... + 1040064515.

It is an arithmetic number, because the mean of its divisors is an integer number (3120193533).

Almost surely, 2^10400645105 is an apocalyptic number.

It is an amenable number.

10400645105 is a deficient number, since it is larger than the sum of its proper divisors (2080129027).

10400645105 is an equidigital number, since it uses as much as digits as its factorization.

10400645105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080129026.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 10400645105 in words is "ten billion, four hundred million, six hundred forty-five thousand, one hundred five".