205463120600015 has 4 divisors (see below), whose sum is σ = 246555744720024. Its totient is φ = 164370496480008.

The previous prime is 205463120599993. The next prime is 205463120600069. The reversal of 205463120600015 is 510006021364502.

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

It is a cyclic number.

It is not a de Polignac number, because 205463120600015 - 2¹⁰ = 205463120598991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20546312059997 + ... + 20546312060006.

It is an arithmetic number, because the mean of its divisors is an integer number (61638936180006).

Almost surely, 2^{205463120600015} is an apocalyptic number.

205463120600015 is a deficient number, since it is larger than the sum of its proper divisors (41092624120009).

205463120600015 is an equidigital number, since it uses as much as digits as its factorization.

205463120600015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41092624120008.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 205463120600015 its reverse (510006021364502), we get a palindrome (715469141964517).

The spelling of 205463120600015 in words is "two hundred five trillion, four hundred sixty-three billion, one hundred twenty million, six hundred thousand, fifteen".