20261063242 has 16 divisors (see below), whose sum is σ = 34842827520. Its totient is φ = 8655918768.

The previous prime is 20261063227. The next prime is 20261063257. The reversal of 20261063242 is 24236016202.

It is an interprime number because it is at equal distance from previous prime (20261063227) and next prime (20261063257).

It is a self number, because there is not a number n which added to its sum of digits gives 20261063242.

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, 2278242 + ... + 2287117.

It is an arithmetic number, because the mean of its divisors is an integer number (2177676720).

Almost surely, 2^20261063242 is an apocalyptic number.

20261063242 is a deficient number, since it is larger than the sum of its proper divisors (14581764278).

20261063242 is a wasteful number, since it uses less digits than its factorization.

20261063242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4565685.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 20261063242 its reverse (24236016202), we get a palindrome (44497079444).

The spelling of 20261063242 in words is "twenty billion, two hundred sixty-one million, sixty-three thousand, two hundred forty-two".