205405541375 has 16 divisors (see below), whose sum is σ = 256408138272. Its totient is φ = 164284675200.

The previous prime is 205405541323. The next prime is 205405541413. The reversal of 205405541375 is 573145504502.

It is not a de Polignac number, because 205405541375 - 2⁶ = 205405541311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325424 + ... + 718826.

It is an arithmetic number, because the mean of its divisors is an integer number (16025508642).

Almost surely, 2^205405541375 is an apocalyptic number.

205405541375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

205405541375 is a deficient number, since it is larger than the sum of its proper divisors (51002596897).

205405541375 is an equidigital number, since it uses as much as digits as its factorization.

205405541375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397595 (or 397585 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 41.

The spelling of 205405541375 in words is "two hundred five billion, four hundred five million, five hundred forty-one thousand, three hundred seventy-five".