201501461603 has 4 divisors (see below), whose sum is σ = 217001574048. Its totient is φ = 186001349160.

The previous prime is 201501461597. The next prime is 201501461683. The reversal of 201501461603 is 306164105102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201501461603 - 2⁴ = 201501461587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201501461683) 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, 7750056203 + ... + 7750056228.

It is an arithmetic number, because the mean of its divisors is an integer number (54250393512).

Almost surely, 2^201501461603 is an apocalyptic number.

201501461603 is a deficient number, since it is larger than the sum of its proper divisors (15500112445).

201501461603 is a wasteful number, since it uses less digits than its factorization.

201501461603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15500112444.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 201501461603 its reverse (306164105102), we get a palindrome (507665566705).

The spelling of 201501461603 in words is "two hundred one billion, five hundred one million, four hundred sixty-one thousand, six hundred three".