205432779548 has 12 divisors (see below), whose sum is σ = 359552646600. Its totient is φ = 102703451952.

The previous prime is 205432779493. The next prime is 205432779551. The reversal of 205432779548 is 845977234502.

It is a junction number, because it is equal to n+sod(n) for n = 205432779493 and 205432779502.

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, 3198686 + ... + 3262277.

It is an arithmetic number, because the mean of its divisors is an integer number (29962720550).

Almost surely, 2^205432779548 is an apocalyptic number.

It is an amenable number.

205432779548 is a deficient number, since it is larger than the sum of its proper divisors (154119867052).

205432779548 is a wasteful number, since it uses less digits than its factorization.

205432779548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468916 (or 6468914 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 56.

The spelling of 205432779548 in words is "two hundred five billion, four hundred thirty-two million, seven hundred seventy-nine thousand, five hundred forty-eight".