204155132105541 has 32 divisors (see below), whose sum is σ = 288458096209920. Its totient is φ = 127991089545984.

The previous prime is 204155132105531. The next prime is 204155132105567. The reversal of 204155132105541 is 145501231551402.

It is not a de Polignac number, because 204155132105541 - 2⁷ = 204155132105413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204155132105541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204155132105531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1181647320 + ... + 1181820078.

It is an arithmetic number, because the mean of its divisors is an integer number (9014315506560).

Almost surely, 2^{204155132105541} is an apocalyptic number.

It is an amenable number.

204155132105541 is a deficient number, since it is larger than the sum of its proper divisors (84302964104379).

204155132105541 is a wasteful number, since it uses less digits than its factorization.

204155132105541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191865.

The product of its (nonzero) digits is 120000, while the sum is 39.

Adding to 204155132105541 its reverse (145501231551402), we get a palindrome (349656363656943).

The spelling of 204155132105541 in words is "two hundred four trillion, one hundred fifty-five billion, one hundred thirty-two million, one hundred five thousand, five hundred forty-one".