201501204664 has 32 divisors (see below), whose sum is σ = 380384848800. Its totient is φ = 100065484800.

The previous prime is 201501204637. The next prime is 201501204673. The reversal of 201501204664 is 466402105102.

It is a happy number.

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, 8996872 + ... + 9019240.

It is an arithmetic number, because the mean of its divisors is an integer number (11887026525).

Almost surely, 2^201501204664 is an apocalyptic number.

It is an amenable number.

201501204664 is a deficient number, since it is larger than the sum of its proper divisors (178883644136).

201501204664 is a wasteful number, since it uses less digits than its factorization.

201501204664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29983 (or 29979 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 201501204664 its reverse (466402105102), we get a palindrome (667903309766).

The spelling of 201501204664 in words is "two hundred one billion, five hundred one million, two hundred four thousand, six hundred sixty-four".