201423515054 has 16 divisors (see below), whose sum is σ = 323762252688. Its totient is φ = 93645516672.

The previous prime is 201423515047. The next prime is 201423515203. The reversal of 201423515054 is 450515324102.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201423515054.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35685257 + ... + 35690900.

It is an arithmetic number, because the mean of its divisors is an integer number (20235140793).

Almost surely, 2^201423515054 is an apocalyptic number.

201423515054 is a deficient number, since it is larger than the sum of its proper divisors (122338737634).

201423515054 is a wasteful number, since it uses less digits than its factorization.

201423515054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71376259.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 201423515054 its reverse (450515324102), we get a palindrome (651938839156).

The spelling of 201423515054 in words is "two hundred one billion, four hundred twenty-three million, five hundred fifteen thousand, fifty-four".