20800987038 has 48 divisors (see below), whose sum is σ = 48548275776. Its totient is φ = 6398637120.

The previous prime is 20800987001. The next prime is 20800987057. The reversal of 20800987038 is 83078900802.

It is a junction number, because it is equal to n+sod(n) for n = 20800986984 and 20800987002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1128331 + ... + 1146617.

It is an arithmetic number, because the mean of its divisors is an integer number (1011422412).

Almost surely, 2^20800987038 is an apocalyptic number.

20800987038 is an abundant number, since it is smaller than the sum of its proper divisors (27747288738).

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

20800987038 is a wasteful number, since it uses less digits than its factorization.

20800987038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23169 (or 23166 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 20800987038 in words is "twenty billion, eight hundred million, nine hundred eighty-seven thousand, thirty-eight".