978855453259 has 2 divisors, whose sum is σ = 978855453260. Its totient is φ = 978855453258.

The previous prime is 978855453239. The next prime is 978855453269. The reversal of 978855453259 is 952354558879.

978855453259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (952354558879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 978855453259 - 2²⁵ = 978821898827 is a prime.

It is not a weakly prime, because it can be changed into another prime (978855453239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489427726629 + 489427726630.

It is an arithmetic number, because the mean of its divisors is an integer number (489427726630).

Almost surely, 2^978855453259 is an apocalyptic number.

978855453259 is a deficient number, since it is larger than the sum of its proper divisors (1).

978855453259 is an equidigital number, since it uses as much as digits as its factorization.

978855453259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320000, while the sum is 70.

The spelling of 978855453259 in words is "nine hundred seventy-eight billion, eight hundred fifty-five million, four hundred fifty-three thousand, two hundred fifty-nine".