2315716777647 has 64 divisors (see below), whose sum is σ = 4280230850560. Its totient is φ = 1204744326912.

The previous prime is 2315716777613. The next prime is 2315716777679. The reversal of 2315716777647 is 7467776175132.

It is not a de Polignac number, because 2315716777647 - 2¹¹ = 2315716775599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2315716772647) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6276103 + ... + 6634824.

It is an arithmetic number, because the mean of its divisors is an integer number (66878607040).

Almost surely, 2^{2315716777647} is an apocalyptic number.

2315716777647 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2315716777647 is a deficient number, since it is larger than the sum of its proper divisors (1964514072913).

2315716777647 is a wasteful number, since it uses less digits than its factorization.

2315716777647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12911029 (or 12911023 counting only the distinct ones).

The product of its digits is 72606240, while the sum is 63.

The spelling of 2315716777647 in words is "two trillion, three hundred fifteen billion, seven hundred sixteen million, seven hundred seventy-seven thousand, six hundred forty-seven".