7041806857 has 2 divisors, whose sum is σ = 7041806858. Its totient is φ = 7041806856.

The previous prime is 7041806833. The next prime is 7041806873. The reversal of 7041806857 is 7586081407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5064314896 + 1977491961 = 71164^2 + 44469^2 .

It is a cyclic number.

It is not a de Polignac number, because 7041806857 - 2⁷ = 7041806729 is a prime.

It is a super-2 number, since 2×7041806857² = 99174087622584436898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7041806887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3520903428 + 3520903429.

It is an arithmetic number, because the mean of its divisors is an integer number (3520903429).

Almost surely, 2^7041806857 is an apocalyptic number.

It is an amenable number.

7041806857 is a deficient number, since it is larger than the sum of its proper divisors (1).

7041806857 is an equidigital number, since it uses as much as digits as its factorization.

7041806857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 7041806857 is about 83915.4744787873. The cubic root of 7041806857 is about 1916.7318949076.

The spelling of 7041806857 in words is "seven billion, forty-one million, eight hundred six thousand, eight hundred fifty-seven".