20623610308 has 24 divisors (see below), whose sum is σ = 41524056000. Its totient is φ = 8779368288.

The previous prime is 20623610297. The next prime is 20623610309. The reversal of 20623610308 is 80301632602.

It is a self number, because there is not a number n which added to its sum of digits gives 20623610308.

It is not an unprimeable number, because it can be changed into a prime (20623610309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2467498 + ... + 2475841.

It is an arithmetic number, because the mean of its divisors is an integer number (1730169000).

Almost surely, 2^20623610308 is an apocalyptic number.

20623610308 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20623610308 is an abundant number, since it is smaller than the sum of its proper divisors (20900445692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20623610308 is a wasteful number, since it uses less digits than its factorization.

20623610308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4943499 (or 4943497 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 20623610308 in words is "twenty billion, six hundred twenty-three million, six hundred ten thousand, three hundred eight".