978827419861 has 8 divisors (see below), whose sum is σ = 1021397952960. Its totient is φ = 936257955072.

The previous prime is 978827419859. The next prime is 978827419897. The reversal of 978827419861 is 168914728879.

978827419861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 978827419861 - 2¹ = 978827419859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978827419841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2023221 + ... + 2459893.

It is an arithmetic number, because the mean of its divisors is an integer number (127674744120).

Almost surely, 2^978827419861 is an apocalyptic number.

It is an amenable number.

978827419861 is a deficient number, since it is larger than the sum of its proper divisors (42570533099).

978827419861 is a wasteful number, since it uses less digits than its factorization.

978827419861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534155.

The product of its digits is 97542144, while the sum is 70.

The spelling of 978827419861 in words is "nine hundred seventy-eight billion, eight hundred twenty-seven million, four hundred nineteen thousand, eight hundred sixty-one".