8216656052857 has 4 divisors (see below), whose sum is σ = 9390464060416. Its totient is φ = 7042848045300.

The previous prime is 8216656052833. The next prime is 8216656052873. The reversal of 8216656052857 is 7582506566128.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8216656052857 - 2³¹ = 8214508569209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8216656052795 and 8216656052804.

It is not an unprimeable number, because it can be changed into a prime (8216656055857) 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, 586904003769 + ... + 586904003782.

It is an arithmetic number, because the mean of its divisors is an integer number (2347616015104).

Almost surely, 2^{8216656052857} is an apocalyptic number.

It is an amenable number.

8216656052857 is a deficient number, since it is larger than the sum of its proper divisors (1173808007559).

8216656052857 is a wasteful number, since it uses less digits than its factorization.

8216656052857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173808007558.

The product of its (nonzero) digits is 48384000, while the sum is 61.

The spelling of 8216656052857 in words is "eight trillion, two hundred sixteen billion, six hundred fifty-six million, fifty-two thousand, eight hundred fifty-seven".