20154044212 has 6 divisors (see below), whose sum is σ = 35269577378. Its totient is φ = 10077022104.

The previous prime is 20154044203. The next prime is 20154044213. The reversal of 20154044212 is 21244045102.

It can be written as a sum of positive squares in only one way, i.e., 18027358756 + 2126685456 = 134266^2 + 46116^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154044213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2519255523 + ... + 2519255530.

Almost surely, 2^20154044212 is an apocalyptic number.

It is an amenable number.

20154044212 is a deficient number, since it is larger than the sum of its proper divisors (15115533166).

20154044212 is a wasteful number, since it uses less digits than its factorization.

20154044212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5038511057 (or 5038511055 counting only the distinct ones).

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

Adding to 20154044212 its reverse (21244045102), we get a palindrome (41398089314).

The spelling of 20154044212 in words is "twenty billion, one hundred fifty-four million, forty-four thousand, two hundred twelve".