205794413086 has 4 divisors (see below), whose sum is σ = 308691619632. Its totient is φ = 102897206542.

The previous prime is 205794413063. The next prime is 205794413107. The reversal of 205794413086 is 680314497502.

It is a happy number.

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

It is a super-2 number, since 2×205794413086² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51448603270 + ... + 51448603273.

It is an arithmetic number, because the mean of its divisors is an integer number (77172904908).

It is a 1-persistent number, because it is pandigital, but 2⋅205794413086 = 411588826172 is not.

Almost surely, 2^205794413086 is an apocalyptic number.

205794413086 is a deficient number, since it is larger than the sum of its proper divisors (102897206546).

205794413086 is a wasteful number, since it uses less digits than its factorization.

205794413086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102897206545.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 205794413086 in words is "two hundred five billion, seven hundred ninety-four million, four hundred thirteen thousand, eighty-six".