8257109745967 has 4 divisors (see below), whose sum is σ = 8278336249560. Its totient is φ = 8235883242376.

The previous prime is 8257109745893. The next prime is 8257109746013. The reversal of 8257109745967 is 7695479017528.

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 8257109745967 - 2²³ = 8257101357359 is a prime.

It is a super-2 number, since 2×8257109745967² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8257109745896 and 8257109745905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8257109748967) 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, 10613251213 + ... + 10613251990.

It is an arithmetic number, because the mean of its divisors is an integer number (2069584062390).

Almost surely, 2^{8257109745967} is an apocalyptic number.

8257109745967 is a deficient number, since it is larger than the sum of its proper divisors (21226503593).

8257109745967 is a wasteful number, since it uses less digits than its factorization.

8257109745967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21226503592.

The product of its (nonzero) digits is 266716800, while the sum is 70.

The spelling of 8257109745967 in words is "eight trillion, two hundred fifty-seven billion, one hundred nine million, seven hundred forty-five thousand, nine hundred sixty-seven".