10355205251605 has 4 divisors (see below), whose sum is σ = 12426246301932. Its totient is φ = 8284164201280.

The previous prime is 10355205251591. The next prime is 10355205251681. The reversal of 10355205251605 is 50615250255301.

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 2577392641476 + 7777812610129 = 1605426^2 + 2788873^2 .

It is a de Polignac number, because none of the positive numbers 2^k-10355205251605 is a prime.

It is a super-3 number, since 3×10355205251605³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1035520525156 + ... + 1035520525165.

It is an arithmetic number, because the mean of its divisors is an integer number (3106561575483).

Almost surely, 2^{10355205251605} is an apocalyptic number.

It is an amenable number.

10355205251605 is a deficient number, since it is larger than the sum of its proper divisors (2071041050327).

10355205251605 is an equidigital number, since it uses as much as digits as its factorization.

10355205251605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071041050326.

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 10355205251605 in words is "ten trillion, three hundred fifty-five billion, two hundred five million, two hundred fifty-one thousand, six hundred five".