204222155034554 has 4 divisors (see below), whose sum is σ = 306333232551834. Its totient is φ = 102111077517276.

The previous prime is 204222155034539. The next prime is 204222155034559. The reversal of 204222155034554 is 455430551222402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 155757264075625 + 48464890958929 = 12480275^2 + 6961673^2 .

It is not an unprimeable number, because it can be changed into a prime (204222155034559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055538758637 + ... + 51055538758640.

Almost surely, 2^{204222155034554} is an apocalyptic number.

204222155034554 is a deficient number, since it is larger than the sum of its proper divisors (102111077517280).

204222155034554 is a wasteful number, since it uses less digits than its factorization.

204222155034554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102111077517279.

The product of its (nonzero) digits is 1920000, while the sum is 44.

The spelling of 204222155034554 in words is "two hundred four trillion, two hundred twenty-two billion, one hundred fifty-five million, thirty-four thousand, five hundred fifty-four".