204542155344001 has 2 divisors, whose sum is σ = 204542155344002. Its totient is φ = 204542155344000.

The previous prime is 204542155343993. The next prime is 204542155344019. The reversal of 204542155344001 is 100443551245402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114847144488976 + 89695010855025 = 10716676^2 + 9470745^2 .

It is a cyclic number.

It is not a de Polignac number, because 204542155344001 - 2³ = 204542155343993 is a prime.

It is not a weakly prime, because it can be changed into another prime (204542155344031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102271077672000 + 102271077672001.

It is an arithmetic number, because the mean of its divisors is an integer number (102271077672001).

Almost surely, 2^{204542155344001} is an apocalyptic number.

It is an amenable number.

204542155344001 is a deficient number, since it is larger than the sum of its proper divisors (1).

204542155344001 is an equidigital number, since it uses as much as digits as its factorization.

204542155344001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384000, while the sum is 40.

The spelling of 204542155344001 in words is "two hundred four trillion, five hundred forty-two billion, one hundred fifty-five million, three hundred forty-four thousand, one".