20115572442 has 16 divisors (see below), whose sum is σ = 45978451392. Its totient is φ = 5747306400.

The previous prime is 20115572429. The next prime is 20115572467. The reversal of 20115572442 is 24427551102.

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, 239471059 + ... + 239471142.

It is an arithmetic number, because the mean of its divisors is an integer number (2873653212).

Almost surely, 2^20115572442 is an apocalyptic number.

20115572442 is an abundant number, since it is smaller than the sum of its proper divisors (25862878950).

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

20115572442 is a wasteful number, since it uses less digits than its factorization.

20115572442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478942213.

The product of its (nonzero) digits is 22400, while the sum is 33.

It can be divided in two parts, 2011557 and 2442, that multiplied together give a palindrome (4912222194).

The spelling of 20115572442 in words is "twenty billion, one hundred fifteen million, five hundred seventy-two thousand, four hundred forty-two".