20043351215 has 16 divisors (see below), whose sum is σ = 25040477568. Its totient is φ = 15387584256.

The previous prime is 20043351151. The next prime is 20043351217. The reversal of 20043351215 is 51215334002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20043351215 - 2⁶ = 20043351151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043351217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 728567 + ... + 755576.

It is an arithmetic number, because the mean of its divisors is an integer number (1565029848).

Almost surely, 2^20043351215 is an apocalyptic number.

20043351215 is a deficient number, since it is larger than the sum of its proper divisors (4997126353).

20043351215 is a wasteful number, since it uses less digits than its factorization.

20043351215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484258.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 20043351215 its reverse (51215334002), we get a palindrome (71258685217).

The spelling of 20043351215 in words is "twenty billion, forty-three million, three hundred fifty-one thousand, two hundred fifteen".