20012153245 has 24 divisors (see below), whose sum is σ = 29154645504. Its totient is φ = 12915399936.

The previous prime is 20012153243. The next prime is 20012153267. The reversal of 20012153245 is 54235121002.

It is not a de Polignac number, because 20012153245 - 2¹ = 20012153243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012153243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 979117 + ... + 999346.

It is an arithmetic number, because the mean of its divisors is an integer number (1214776896).

Almost surely, 2^20012153245 is an apocalyptic number.

It is an amenable number.

20012153245 is a deficient number, since it is larger than the sum of its proper divisors (9142492259).

20012153245 is a wasteful number, since it uses less digits than its factorization.

20012153245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978509 (or 1978492 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 20012153245 its reverse (54235121002), we get a palindrome (74247274247).

The spelling of 20012153245 in words is "twenty billion, twelve million, one hundred fifty-three thousand, two hundred forty-five".