20338780147 has 16 divisors (see below), whose sum is σ = 25531522560. Its totient is φ = 15797624832.

The previous prime is 20338780139. The next prime is 20338780159. The reversal of 20338780147 is 74108783302.

It is a cyclic number.

It is not a de Polignac number, because 20338780147 - 2³ = 20338780139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20338786147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3321358 + ... + 3327475.

It is an arithmetic number, because the mean of its divisors is an integer number (1595720160).

Almost surely, 2^20338780147 is an apocalyptic number.

20338780147 is a deficient number, since it is larger than the sum of its proper divisors (5192742413).

20338780147 is a wasteful number, since it uses less digits than its factorization.

20338780147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6648882.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 20338780147 in words is "twenty billion, three hundred thirty-eight million, seven hundred eighty thousand, one hundred forty-seven".