84374296978 has 8 divisors (see below), whose sum is σ = 126562967100. Its totient is φ = 42186641280.

The previous prime is 84374296969. The next prime is 84374296991. The reversal of 84374296978 is 87969247348.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68474852329 + 15899444649 = 261677^2 + 126093^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8518 + ... + 410878.

Almost surely, 2^84374296978 is an apocalyptic number.

84374296978 is a deficient number, since it is larger than the sum of its proper divisors (42188670122).

84374296978 is a wasteful number, since it uses less digits than its factorization.

84374296978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507212.

The product of its digits is 146313216, while the sum is 67.

The spelling of 84374296978 in words is "eighty-four billion, three hundred seventy-four million, two hundred ninety-six thousand, nine hundred seventy-eight".