205348774993 has 8 divisors (see below), whose sum is σ = 205628544000. Its totient is φ = 205069071648.

The previous prime is 205348774991. The next prime is 205348775029. The reversal of 205348774993 is 399477843502.

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

It is a cyclic number.

It is not a de Polignac number, because 205348774993 - 2¹ = 205348774991 is a prime.

It is a super-2 number, since 2×205348774993² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205348774991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11659408 + ... + 11677006.

It is an arithmetic number, because the mean of its divisors is an integer number (25703568000).

Almost surely, 2^205348774993 is an apocalyptic number.

It is an amenable number.

205348774993 is a deficient number, since it is larger than the sum of its proper divisors (279769007).

205348774993 is a wasteful number, since it uses less digits than its factorization.

205348774993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32831.

The product of its (nonzero) digits is 45722880, while the sum is 61.

The spelling of 205348774993 in words is "two hundred five billion, three hundred forty-eight million, seven hundred seventy-four thousand, nine hundred ninety-three".