13878762650 has 12 divisors (see below), whose sum is σ = 25814498622. Its totient is φ = 5551505040.

The previous prime is 13878762647. The next prime is 13878762661. The reversal of 13878762650 is 5626787831.

It can be written as a sum of positive squares in 3 ways, for example, as 5314555801 + 8564206849 = 72901^2 + 92543^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13878762592 and 13878762601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138787577 + ... + 138787676.

Almost surely, 2^13878762650 is an apocalyptic number.

13878762650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13878762650 is a deficient number, since it is larger than the sum of its proper divisors (11935735972).

13878762650 is a wasteful number, since it uses less digits than its factorization.

13878762650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277575265 (or 277575260 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 13878762650 in words is "thirteen billion, eight hundred seventy-eight million, seven hundred sixty-two thousand, six hundred fifty".