13780028650 has 24 divisors (see below), whose sum is σ = 25675794144. Its totient is φ = 5502346800.

The previous prime is 13780028641. The next prime is 13780028651. The reversal of 13780028650 is 5682008731.

It is not an unprimeable number, because it can be changed into a prime (13780028651) 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, 212782 + ... + 269881.

It is an arithmetic number, because the mean of its divisors is an integer number (1069824756).

Almost surely, 2^13780028650 is an apocalyptic number.

13780028650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13780028650 is a deficient number, since it is larger than the sum of its proper divisors (11895765494).

13780028650 is a wasteful number, since it uses less digits than its factorization.

13780028650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483246 (or 483241 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 13780028650 in words is "thirteen billion, seven hundred eighty million, twenty-eight thousand, six hundred fifty".