8128274363542 has 4 divisors (see below), whose sum is σ = 12192411545316. Its totient is φ = 4064137181770.

The previous prime is 8128274363501. The next prime is 8128274363543. The reversal of 8128274363542 is 2453634728218.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8128274363543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2032068590884 + ... + 2032068590887.

It is an arithmetic number, because the mean of its divisors is an integer number (3048102886329).

Almost surely, 2^{8128274363542} is an apocalyptic number.

8128274363542 is a deficient number, since it is larger than the sum of its proper divisors (4064137181774).

8128274363542 is a wasteful number, since it uses less digits than its factorization.

8128274363542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064137181773.

The product of its digits is 15482880, while the sum is 55.

The spelling of 8128274363542 in words is "eight trillion, one hundred twenty-eight billion, two hundred seventy-four million, three hundred sixty-three thousand, five hundred forty-two".