7838142202647 has 56 divisors (see below), whose sum is σ = 12464698473216. Its totient is φ = 4909522046976.

The previous prime is 7838142202607. The next prime is 7838142202669. The reversal of 7838142202647 is 7462022418387.

7838142202647 is a `hidden beast` number, since 7 + 83 + 81 + 4 + 220 + 264 + 7 = 666.

It is not a de Polignac number, because 7838142202647 - 2⁸ = 7838142202391 is a prime.

It is a super-2 number, since 2×7838142202647² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7838142202593 and 7838142202602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7838142202607) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 6602698 + ... + 7698824.

Almost surely, 2^{7838142202647} is an apocalyptic number.

7838142202647 is a deficient number, since it is larger than the sum of its proper divisors (4626556270569).

7838142202647 is a wasteful number, since it uses less digits than its factorization.

7838142202647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096739 (or 1096724 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 54.

The spelling of 7838142202647 in words is "seven trillion, eight hundred thirty-eight billion, one hundred forty-two million, two hundred two thousand, six hundred forty-seven".