205542199475 has 12 divisors (see below), whose sum is σ = 255887762760. Its totient is φ = 163778640000.

The previous prime is 205542199417. The next prime is 205542199549. The reversal of 205542199475 is 574991245502.

It is not a de Polignac number, because 205542199475 - 2¹⁰ = 205542198451 is a prime.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16371590 + ... + 16384139.

It is an arithmetic number, because the mean of its divisors is an integer number (21323980230).

Almost surely, 2^205542199475 is an apocalyptic number.

205542199475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

205542199475 is a deficient number, since it is larger than the sum of its proper divisors (50345563285).

205542199475 is a wasteful number, since it uses less digits than its factorization.

205542199475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32755990 (or 32755985 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 53.

The spelling of 205542199475 in words is "two hundred five billion, five hundred forty-two million, one hundred ninety-nine thousand, four hundred seventy-five".