20623643337 has 32 divisors (see below), whose sum is σ = 30147296256. Its totient is φ = 12437150400.

The previous prime is 20623643329. The next prime is 20623643357. The reversal of 20623643337 is 73334632602.

It is not a de Polignac number, because 20623643337 - 2³ = 20623643329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20623643295 and 20623643304.

It is not an unprimeable number, because it can be changed into a prime (20623643357) 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 31 ways as a sum of consecutive naturals, for example, 6189762 + ... + 6193092.

It is an arithmetic number, because the mean of its divisors is an integer number (942103008).

Almost surely, 2^20623643337 is an apocalyptic number.

It is an amenable number.

20623643337 is a deficient number, since it is larger than the sum of its proper divisors (9523652919).

20623643337 is a wasteful number, since it uses less digits than its factorization.

20623643337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221.

The product of its (nonzero) digits is 326592, while the sum is 39.

The spelling of 20623643337 in words is "twenty billion, six hundred twenty-three million, six hundred forty-three thousand, three hundred thirty-seven".