20142285736 has 8 divisors (see below), whose sum is σ = 37766785770. Its totient is φ = 10071142864.

The previous prime is 20142285659. The next prime is 20142285749. The reversal of 20142285736 is 63758224102.

It can be written as a sum of positive squares in only one way, i.e., 20137312836 + 4972900 = 141906^2 + 2230^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258892851 + ... + 1258892866.

Almost surely, 2^20142285736 is an apocalyptic number.

It is an amenable number.

20142285736 is a deficient number, since it is larger than the sum of its proper divisors (17624500034).

20142285736 is a wasteful number, since it uses less digits than its factorization.

20142285736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2517785723 (or 2517785719 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 20142285736 in words is "twenty billion, one hundred forty-two million, two hundred eighty-five thousand, seven hundred thirty-six".