978685100203 has 2 divisors, whose sum is σ = 978685100204. Its totient is φ = 978685100202.

The previous prime is 978685100201. The next prime is 978685100269. The reversal of 978685100203 is 302001586879.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 978685100203 - 2¹ = 978685100201 is a prime.

Together with 978685100201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (978685100201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489342550101 + 489342550102.

It is an arithmetic number, because the mean of its divisors is an integer number (489342550102).

Almost surely, 2^978685100203 is an apocalyptic number.

978685100203 is a deficient number, since it is larger than the sum of its proper divisors (1).

978685100203 is an equidigital number, since it uses as much as digits as its factorization.

978685100203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 978685100203 in words is "nine hundred seventy-eight billion, six hundred eighty-five million, one hundred thousand, two hundred three".