201652431646 has 16 divisors (see below), whose sum is σ = 303581232000. Its totient is φ = 100458767448.

The previous prime is 201652431641. The next prime is 201652431649. The reversal of 201652431646 is 646134256102.

It is a junction number, because it is equal to n+sod(n) for n = 201652431599 and 201652431608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201652431641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7797325 + ... + 7823143.

It is an arithmetic number, because the mean of its divisors is an integer number (18973827000).

Almost surely, 2^201652431646 is an apocalyptic number.

201652431646 is a deficient number, since it is larger than the sum of its proper divisors (101928800354).

201652431646 is a wasteful number, since it uses less digits than its factorization.

201652431646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39903.

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 201652431646 its reverse (646134256102), we get a palindrome (847786687748).

The spelling of 201652431646 in words is "two hundred one billion, six hundred fifty-two million, four hundred thirty-one thousand, six hundred forty-six".