201320322642 has 48 divisors (see below), whose sum is σ = 458720563392. Its totient is φ = 66161597040.

The previous prime is 201320322641. The next prime is 201320322649. The reversal of 201320322642 is 246223023102.

It is a happy number.

201320322642 is a `hidden beast` number, since 2 + 0 + 13 + 2 + 0 + 3 + 2 + 2 + 642 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (201320322641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2882673 + ... + 2951684.

It is an arithmetic number, because the mean of its divisors is an integer number (9556678404).

Almost surely, 2^201320322642 is an apocalyptic number.

201320322642 is an abundant number, since it is smaller than the sum of its proper divisors (257400240750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201320322642 is an equidigital number, since it uses as much as digits as its factorization.

201320322642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5834445 (or 5834433 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 201320322642 its reverse (246223023102), we get a palindrome (447543345744).

The spelling of 201320322642 in words is "two hundred one billion, three hundred twenty million, three hundred twenty-two thousand, six hundred forty-two".