84262478401 has 4 divisors (see below), whose sum is σ = 84284351572. Its totient is φ = 84240605232.

The previous prime is 84262478371. The next prime is 84262478423. The reversal of 84262478401 is 10487426248.

It is a Cunningham number, because it is equal to 290280²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 83477077776 + 785400625 = 288924^2 + 28025^2 .

It is a cyclic number.

It is not a de Polignac number, because 84262478401 - 2⁹ = 84262477889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84262478431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10930806 + ... + 10938511.

It is an arithmetic number, because the mean of its divisors is an integer number (21071087893).

Almost surely, 2^84262478401 is an apocalyptic number.

It is an amenable number.

84262478401 is a deficient number, since it is larger than the sum of its proper divisors (21873171).

84262478401 is a wasteful number, since it uses less digits than its factorization.

84262478401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21873170.

The product of its (nonzero) digits is 688128, while the sum is 46.

The spelling of 84262478401 in words is "eighty-four billion, two hundred sixty-two million, four hundred seventy-eight thousand, four hundred one".