84578957803 has 2 divisors, whose sum is σ = 84578957804. Its totient is φ = 84578957802.

The previous prime is 84578957789. The next prime is 84578957807. The reversal of 84578957803 is 30875987548.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84578957803 is a prime.

It is not a weakly prime, because it can be changed into another prime (84578957807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42289478901 + 42289478902.

It is an arithmetic number, because the mean of its divisors is an integer number (42289478902).

Almost surely, 2^84578957803 is an apocalyptic number.

84578957803 is a deficient number, since it is larger than the sum of its proper divisors (1).

84578957803 is an equidigital number, since it uses as much as digits as its factorization.

84578957803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67737600, while the sum is 64.

The spelling of 84578957803 in words is "eighty-four billion, five hundred seventy-eight million, nine hundred fifty-seven thousand, eight hundred three".