201652421461 has 8 divisors (see below), whose sum is σ = 205113434648. Its totient is φ = 198196416000.

The previous prime is 201652421429. The next prime is 201652421483. The reversal of 201652421461 is 164124256102.

It can be written as a sum of positive squares in 4 ways, for example, as 22791940900 + 178860480561 = 150970^2 + 422919^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 201652421461 - 2⁵ = 201652421429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201652427461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1170660 + ... + 1331821.

It is an arithmetic number, because the mean of its divisors is an integer number (25639179331).

Almost surely, 2^201652421461 is an apocalyptic number.

It is an amenable number.

201652421461 is a deficient number, since it is larger than the sum of its proper divisors (3461013187).

201652421461 is a wasteful number, since it uses less digits than its factorization.

201652421461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503863.

The product of its (nonzero) digits is 23040, while the sum is 34.

Adding to 201652421461 its reverse (164124256102), we get a palindrome (365776677563).

The spelling of 201652421461 in words is "two hundred one billion, six hundred fifty-two million, four hundred twenty-one thousand, four hundred sixty-one".