20102032144 has 10 divisors (see below), whose sum is σ = 38947687310. Its totient is φ = 10051016064.

The previous prime is 20102032127. The next prime is 20102032169. The reversal of 20102032144 is 44123020102.

It can be written as a sum of positive squares in only one way, i.e., 16412684544 + 3689347600 = 128112^2 + 60740^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628188489 + ... + 628188520.

It is an arithmetic number, because the mean of its divisors is an integer number (3894768731).

Almost surely, 2^20102032144 is an apocalyptic number.

It is an amenable number.

20102032144 is a deficient number, since it is larger than the sum of its proper divisors (18845655166).

20102032144 is a wasteful number, since it uses less digits than its factorization.

20102032144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256377017 (or 1256377011 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20102032144 its reverse (44123020102), we get a palindrome (64225052246).

The spelling of 20102032144 in words is "twenty billion, one hundred two million, thirty-two thousand, one hundred forty-four".