6940427257567 has 4 divisors (see below), whose sum is σ = 6940456038360. Its totient is φ = 6940398476776.

The previous prime is 6940427257501. The next prime is 6940427257583. The reversal of 6940427257567 is 7657527240496.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6940427257567 - 2¹¹ = 6940427255519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6940427257499 and 6940427257508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6940427857567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14025592 + ... + 14511997.

It is an arithmetic number, because the mean of its divisors is an integer number (1735114009590).

Almost surely, 2^{6940427257567} is an apocalyptic number.

6940427257567 is a deficient number, since it is larger than the sum of its proper divisors (28780793).

6940427257567 is a wasteful number, since it uses less digits than its factorization.

6940427257567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28780792.

The product of its (nonzero) digits is 177811200, while the sum is 64.

The spelling of 6940427257567 in words is "six trillion, nine hundred forty billion, four hundred twenty-seven million, two hundred fifty-seven thousand, five hundred sixty-seven".