205102214405 has 16 divisors (see below), whose sum is σ = 271104223104. Its totient is φ = 147717036480.

The previous prime is 205102214371. The next prime is 205102214413. The reversal of 205102214405 is 504412201502.

It is not a de Polignac number, because 205102214405 - 2⁶ = 205102214341 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18096914 + ... + 18108243.

It is an arithmetic number, because the mean of its divisors is an integer number (16944013944).

Almost surely, 2^205102214405 is an apocalyptic number.

It is an amenable number.

205102214405 is a deficient number, since it is larger than the sum of its proper divisors (66002008699).

205102214405 is a wasteful number, since it uses less digits than its factorization.

205102214405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36205276.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 205102214405 its reverse (504412201502), we get a palindrome (709514415907).

The spelling of 205102214405 in words is "two hundred five billion, one hundred two million, two hundred fourteen thousand, four hundred five".