13782666786248 has 8 divisors (see below), whose sum is σ = 25842500224230. Its totient is φ = 6891333393120.

The previous prime is 13782666786247. The next prime is 13782666786277. The reversal of 13782666786248 is 84268766628731.

It can be written as a sum of positive squares in only one way, i.e., 13468885320004 + 313781466244 = 3669998^2 + 560162^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13782666786247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861416674133 + ... + 861416674148.

Almost surely, 2^{13782666786248} is an apocalyptic number.

It is an amenable number.

13782666786248 is a deficient number, since it is larger than the sum of its proper divisors (12059833437982).

13782666786248 is a wasteful number, since it uses less digits than its factorization.

13782666786248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722833348287 (or 1722833348283 counting only the distinct ones).

The product of its digits is 1560674304, while the sum is 74.

The spelling of 13782666786248 in words is "thirteen trillion, seven hundred eighty-two billion, six hundred sixty-six million, seven hundred eighty-six thousand, two hundred forty-eight".