204155415031001 has 6 divisors (see below), whose sum is σ = 237486911362650. Its totient is φ = 174990355740816.

The previous prime is 204155415030979. The next prime is 204155415031027. The reversal of 204155415031001 is 100130514551402.

It can be written as a sum of positive squares in only one way, i.e., 148654032525376 + 55501382505625 = 12192376^2 + 7449925^2 .

It is a de Polignac number, because none of the positive numbers 2^k-204155415031001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204155415031091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2083218520676 + ... + 2083218520773.

It is an arithmetic number, because the mean of its divisors is an integer number (39581151893775).

Almost surely, 2^{204155415031001} is an apocalyptic number.

It is an amenable number.

204155415031001 is a deficient number, since it is larger than the sum of its proper divisors (33331496331649).

204155415031001 is an equidigital number, since it uses as much as digits as its factorization.

204155415031001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166437041463 (or 4166437041456 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 204155415031001 its reverse (100130514551402), we get a palindrome (304285929582403).

The spelling of 204155415031001 in words is "two hundred four trillion, one hundred fifty-five billion, four hundred fifteen million, thirty-one thousand, one".