20868037850 has 24 divisors (see below), whose sum is σ = 42343147008. Its totient is φ = 7588377200.

The previous prime is 20868037847. The next prime is 20868037859. The reversal of 20868037850 is 5873086802.

It is a junction number, because it is equal to n+sod(n) for n = 20868037795 and 20868037804.

It is not an unprimeable number, because it can be changed into a prime (20868037859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18970394 + ... + 18971493.

It is an arithmetic number, because the mean of its divisors is an integer number (1764297792).

Almost surely, 2^20868037850 is an apocalyptic number.

20868037850 is an abundant number, since it is smaller than the sum of its proper divisors (21475109158).

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

20868037850 is a wasteful number, since it uses less digits than its factorization.

20868037850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37941910 (or 37941905 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 20868037850 in words is "twenty billion, eight hundred sixty-eight million, thirty-seven thousand, eight hundred fifty".