8212278057 has 16 divisors (see below), whose sum is σ = 11296104960. Its totient is φ = 5302979712.

The previous prime is 8212278017. The next prime is 8212278091. The reversal of 8212278057 is 7508722128.

It is not a de Polignac number, because 8212278057 - 2¹⁸ = 8212015913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8212278017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141132 + ... + 190637.

It is an arithmetic number, because the mean of its divisors is an integer number (706006560).

Almost surely, 2^8212278057 is an apocalyptic number.

It is an amenable number.

8212278057 is a deficient number, since it is larger than the sum of its proper divisors (3083826903).

8212278057 is a wasteful number, since it uses less digits than its factorization.

8212278057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332032.

The product of its (nonzero) digits is 125440, while the sum is 42.

The square root of 8212278057 is about 90621.6202514610. The cubic root of 8212278057 is about 2017.5356394098.

The spelling of 8212278057 in words is "eight billion, two hundred twelve million, two hundred seventy-eight thousand, fifty-seven".