205601104553 has 8 divisors (see below), whose sum is σ = 221473300608. Its totient is φ = 189737012304.

The previous prime is 205601104549. The next prime is 205601104717. The reversal of 205601104553 is 355401106502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205601104553 - 2² = 205601104549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205601104153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1973201 + ... + 2074782.

It is an arithmetic number, because the mean of its divisors is an integer number (27684162576).

Almost surely, 2^205601104553 is an apocalyptic number.

It is an amenable number.

205601104553 is a deficient number, since it is larger than the sum of its proper divisors (15872196055).

205601104553 is a wasteful number, since it uses less digits than its factorization.

205601104553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4051903.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 205601104553 in words is "two hundred five billion, six hundred one million, one hundred four thousand, five hundred fifty-three".