205470944350816 has 24 divisors (see below), whose sum is σ = 406199431754424. Its totient is φ = 102309183905280.

The previous prime is 205470944350813. The next prime is 205470944350877. The reversal of 205470944350816 is 618053449074502.

It is a super-2 number, since 2×205470944350816² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205470944350813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13321500610 + ... + 13321516033.

It is an arithmetic number, because the mean of its divisors is an integer number (16924976323101).

It is a 1-persistent number, because it is pandigital, but 2⋅205470944350816 = 410941888701632 is not.

Almost surely, 2^{205470944350816} is an apocalyptic number.

It is an amenable number.

205470944350816 is a deficient number, since it is larger than the sum of its proper divisors (200728487403608).

205470944350816 is a wasteful number, since it uses less digits than its factorization.

205470944350816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26643016894 (or 26643016886 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 58.

The spelling of 205470944350816 in words is "two hundred five trillion, four hundred seventy billion, nine hundred forty-four million, three hundred fifty thousand, eight hundred sixteen".