8164742474618 has 4 divisors (see below), whose sum is σ = 12247113711930. Its totient is φ = 4082371237308.

The previous prime is 8164742474617. The next prime is 8164742474657.

It is a happy number.

8164742474618 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4148297607169 + 4016444867449 = 2036737^2 + 2004107^2 .

It is not an unprimeable number, because it can be changed into a prime (8164742474617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2041185618653 + ... + 2041185618656.

Almost surely, 2^{8164742474618} is an apocalyptic number.

8164742474618 is a deficient number, since it is larger than the sum of its proper divisors (4082371237312).

8164742474618 is a wasteful number, since it uses less digits than its factorization.

8164742474618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082371237311.

The product of its digits is 57802752, while the sum is 62.

The spelling of 8164742474618 in words is "eight trillion, one hundred sixty-four billion, seven hundred forty-two million, four hundred seventy-four thousand, six hundred eighteen".