205051142054 has 8 divisors (see below), whose sum is σ = 335538232488. Its totient is φ = 93205064560.

The previous prime is 205051142017. The next prime is 205051142063. The reversal of 205051142054 is 450241150502.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4660253207 + ... + 4660253250.

It is an arithmetic number, because the mean of its divisors is an integer number (41942279061).

Almost surely, 2^205051142054 is an apocalyptic number.

205051142054 is a deficient number, since it is larger than the sum of its proper divisors (130487090434).

205051142054 is a wasteful number, since it uses less digits than its factorization.

205051142054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9320506470.

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 205051142054 its reverse (450241150502), we get a palindrome (655292292556).

The spelling of 205051142054 in words is "two hundred five billion, fifty-one million, one hundred forty-two thousand, fifty-four".