20280337969 has 16 divisors (see below), whose sum is σ = 21537121536. Its totient is φ = 19030752000.

The previous prime is 20280337907. The next prime is 20280337993. The reversal of 20280337969 is 96973308202.

It is not a de Polignac number, because 20280337969 - 2¹¹ = 20280335921 is a prime.

It is a super-2 number, since 2×20280337969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20280337169) 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 15 ways as a sum of consecutive naturals, for example, 15282184 + ... + 15283510.

It is an arithmetic number, because the mean of its divisors is an integer number (1346070096).

Almost surely, 2^20280337969 is an apocalyptic number.

It is an amenable number.

20280337969 is a deficient number, since it is larger than the sum of its proper divisors (1256783567).

20280337969 is a wasteful number, since it uses less digits than its factorization.

20280337969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336.

The product of its (nonzero) digits is 979776, while the sum is 49.

The spelling of 20280337969 in words is "twenty billion, two hundred eighty million, three hundred thirty-seven thousand, nine hundred sixty-nine".