201254544601 has 4 divisors (see below), whose sum is σ = 219550412304. Its totient is φ = 182958676900.

The previous prime is 201254544583. The next prime is 201254544613. The reversal of 201254544601 is 106445452102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201254544601 - 2¹³ = 201254536409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201254544301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9147933835 + ... + 9147933856.

It is an arithmetic number, because the mean of its divisors is an integer number (54887603076).

Almost surely, 2^201254544601 is an apocalyptic number.

It is an amenable number.

201254544601 is a deficient number, since it is larger than the sum of its proper divisors (18295867703).

201254544601 is a wasteful number, since it uses less digits than its factorization.

201254544601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18295867702.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 201254544601 its reverse (106445452102), we get a palindrome (307699996703).

The spelling of 201254544601 in words is "two hundred one billion, two hundred fifty-four million, five hundred forty-four thousand, six hundred one".