6918750578197 has 16 divisors (see below), whose sum is σ = 7033821696000. Its totient is φ = 6804373094064.

The previous prime is 6918750578177. The next prime is 6918750578221. The reversal of 6918750578197 is 7918750578196.

It is a cyclic number.

It is not a de Polignac number, because 6918750578197 - 2¹⁹ = 6918750053909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6918750578177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240562504 + ... + 240591262.

It is an arithmetic number, because the mean of its divisors is an integer number (439613856000).

Almost surely, 2^{6918750578197} is an apocalyptic number.

It is an amenable number.

6918750578197 is a deficient number, since it is larger than the sum of its proper divisors (115071117803).

6918750578197 is a wasteful number, since it uses less digits than its factorization.

6918750578197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40680.

The product of its (nonzero) digits is 266716800, while the sum is 73.

Subtracting 6918750578197 from its reverse (7918750578196), we obtain a palindrome (999999999999).

It can be divided in two parts, 6918750 and 578197, that added together give a palindrome (7496947).

The spelling of 6918750578197 in words is "six trillion, nine hundred eighteen billion, seven hundred fifty million, five hundred seventy-eight thousand, one hundred ninety-seven".