138947685363 has 40 divisors (see below), whose sum is σ = 212419294560. Its totient is φ = 90488845440.

The previous prime is 138947685361. The next prime is 138947685377. The reversal of 138947685363 is 363586749831.

138947685363 is a `hidden beast` number, since 1 + 3 + 8 + 94 + 7 + 6 + 8 + 536 + 3 = 666.

It is not a de Polignac number, because 138947685363 - 2¹ = 138947685361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138947685363.

It is not an unprimeable number, because it can be changed into a prime (138947685361) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 516031 + ... + 737687.

It is an arithmetic number, because the mean of its divisors is an integer number (5310482364).

Almost surely, 2^138947685363 is an apocalyptic number.

138947685363 is a deficient number, since it is larger than the sum of its proper divisors (73471609197).

138947685363 is a wasteful number, since it uses less digits than its factorization.

138947685363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221849 (or 221840 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 63.

The spelling of 138947685363 in words is "one hundred thirty-eight billion, nine hundred forty-seven million, six hundred eighty-five thousand, three hundred sixty-three".