205227509148 has 36 divisors (see below), whose sum is σ = 520922129728. Its totient is φ = 68125311360.

The previous prime is 205227509119. The next prime is 205227509183. The reversal of 205227509148 is 841905722502.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×205227509148² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11818636 + ... + 11835987.

Almost surely, 2^205227509148 is an apocalyptic number.

It is an amenable number.

205227509148 is an abundant number, since it is smaller than the sum of its proper divisors (315694620580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205227509148 is a wasteful number, since it uses less digits than its factorization.

205227509148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23654874 (or 23654869 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 205227509148 in words is "two hundred five billion, two hundred twenty-seven million, five hundred nine thousand, one hundred forty-eight".