205047473155 has 16 divisors (see below), whose sum is σ = 281389579200. Its totient is φ = 140513173632.

The previous prime is 205047473119. The next prime is 205047473179. The reversal of 205047473155 is 551374740502.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 205047473155 - 2¹¹ = 205047471107 is a prime.

It is a super-3 number, since 3×205047473155³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1836844 + ... + 1945273.

It is an arithmetic number, because the mean of its divisors is an integer number (17586848700).

Almost surely, 2^205047473155 is an apocalyptic number.

205047473155 is a deficient number, since it is larger than the sum of its proper divisors (76342106045).

205047473155 is a wasteful number, since it uses less digits than its factorization.

205047473155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783678.

The product of its (nonzero) digits is 588000, while the sum is 43.

The spelling of 205047473155 in words is "two hundred five billion, forty-seven million, four hundred seventy-three thousand, one hundred fifty-five".