205421136033 has 8 divisors (see below), whose sum is σ = 273906066496. Its totient is φ = 136941814800.

The previous prime is 205421136017. The next prime is 205421136049. The reversal of 205421136033 is 330631124502.

It is an interprime number because it is at equal distance from previous prime (205421136017) and next prime (205421136049).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205421136033 - 2⁴ = 205421136017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205421136013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1316098 + ... + 1463883.

It is an arithmetic number, because the mean of its divisors is an integer number (34238258312).

Almost surely, 2^205421136033 is an apocalyptic number.

It is an amenable number.

205421136033 is a deficient number, since it is larger than the sum of its proper divisors (68484930463).

205421136033 is a wasteful number, since it uses less digits than its factorization.

205421136033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804615.

The product of its (nonzero) digits is 12960, while the sum is 30.

The spelling of 205421136033 in words is "two hundred five billion, four hundred twenty-one million, one hundred thirty-six thousand, thirty-three".