20261330446 has 8 divisors (see below), whose sum is σ = 34733709360. Its totient is φ = 8683427328.

The previous prime is 20261330429. The next prime is 20261330449. The reversal of 20261330446 is 64403316202.

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

It is a super-2 number, since 2×20261330446² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20261330449) 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, 723618931 + ... + 723618958.

It is an arithmetic number, because the mean of its divisors is an integer number (4341713670).

Almost surely, 2^20261330446 is an apocalyptic number.

20261330446 is a deficient number, since it is larger than the sum of its proper divisors (14472378914).

20261330446 is a wasteful number, since it uses less digits than its factorization.

20261330446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447237898.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 20261330446 its reverse (64403316202), we get a palindrome (84664646648).

The spelling of 20261330446 in words is "twenty billion, two hundred sixty-one million, three hundred thirty thousand, four hundred forty-six".