8206155442657 has 8 divisors (see below), whose sum is σ = 8489158309440. Its totient is φ = 7923154708560.

The previous prime is 8206155442649. The next prime is 8206155442687. The reversal of 8206155442657 is 7562445516028.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8206155442657 - 2³ = 8206155442649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8206155442598 and 8206155442607.

It is not an unprimeable number, because it can be changed into a prime (8206155442687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14137282 + ... + 14706292.

It is an arithmetic number, because the mean of its divisors is an integer number (1061144788680).

Almost surely, 2^{8206155442657} is an apocalyptic number.

It is an amenable number.

8206155442657 is a deficient number, since it is larger than the sum of its proper divisors (283002866783).

8206155442657 is a wasteful number, since it uses less digits than its factorization.

8206155442657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066343.

The product of its (nonzero) digits is 16128000, while the sum is 55.

The spelling of 8206155442657 in words is "eight trillion, two hundred six billion, one hundred fifty-five million, four hundred forty-two thousand, six hundred fifty-seven".