2115864748071 has 6 divisors (see below), whose sum is σ = 3056249080560. Its totient is φ = 1410576498708.

The previous prime is 2115864748057. The next prime is 2115864748073. The reversal of 2115864748071 is 1708474685112.

It is a happy number.

2115864748071 is a `hidden beast` number, since 2 + 1 + 1 + 58 + 6 + 47 + 480 + 71 = 666.

It is not a de Polignac number, because 2115864748071 - 2⁷ = 2115864747943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2115864747999 and 2115864748017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115864748073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117548041551 + ... + 117548041568.

It is an arithmetic number, because the mean of its divisors is an integer number (509374846760).

Almost surely, 2^{2115864748071} is an apocalyptic number.

2115864748071 is a deficient number, since it is larger than the sum of its proper divisors (940384332489).

2115864748071 is a wasteful number, since it uses less digits than its factorization.

2115864748071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235096083125 (or 235096083122 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The spelling of 2115864748071 in words is "two trillion, one hundred fifteen billion, eight hundred sixty-four million, seven hundred forty-eight thousand, seventy-one".