20154012244 has 12 divisors (see below), whose sum is σ = 37344199284. Its totient is φ = 9484241024.

The previous prime is 20154012233. The next prime is 20154012247. The reversal of 20154012244 is 44221045102.

It can be written as a sum of positive squares in 2 ways, for example, as 15064616644 + 5089395600 = 122738^2 + 71340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154012247) 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, 148191199 + ... + 148191334.

It is an arithmetic number, because the mean of its divisors is an integer number (3112016607).

Almost surely, 2^20154012244 is an apocalyptic number.

It is an amenable number.

20154012244 is a deficient number, since it is larger than the sum of its proper divisors (17190187040).

20154012244 is a wasteful number, since it uses less digits than its factorization.

20154012244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296382554 (or 296382552 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 20154012244 its reverse (44221045102), we get a palindrome (64375057346).

The spelling of 20154012244 in words is "twenty billion, one hundred fifty-four million, twelve thousand, two hundred forty-four".