205430230521604 has 48 divisors (see below), whose sum is σ = 393717899365056. Its totient is φ = 93012410777600.

The previous prime is 205430230521559. The next prime is 205430230521643. The reversal of 205430230521604 is 406125032034502.

It is a super-2 number, since 2×205430230521604² (a number of 29 digits) contains 22 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, 841656807 + ... + 841900849.

It is an arithmetic number, because the mean of its divisors is an integer number (8202456236772).

Almost surely, 2^{205430230521604} is an apocalyptic number.

It is an amenable number.

205430230521604 is a deficient number, since it is larger than the sum of its proper divisors (188287668843452).

205430230521604 is a wasteful number, since it uses less digits than its factorization.

205430230521604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318756 (or 318754 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 205430230521604 in words is "two hundred five trillion, four hundred thirty billion, two hundred thirty million, five hundred twenty-one thousand, six hundred four".