978159348967 has 4 divisors (see below), whose sum is σ = 1011888981720. Its totient is φ = 944429716216.

The previous prime is 978159348931. The next prime is 978159348983. The reversal of 978159348967 is 769843951879.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 769843951879 = 67 ⋅11490208237.

It is a cyclic number.

It is not a de Polignac number, because 978159348967 - 2¹¹ = 978159346919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 978159348893 and 978159348902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978159348167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16864816333 + ... + 16864816390.

It is an arithmetic number, because the mean of its divisors is an integer number (252972245430).

Almost surely, 2^978159348967 is an apocalyptic number.

978159348967 is a deficient number, since it is larger than the sum of its proper divisors (33729632753).

978159348967 is a wasteful number, since it uses less digits than its factorization.

978159348967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33729632752.

The product of its digits is 823011840, while the sum is 76.

The spelling of 978159348967 in words is "nine hundred seventy-eight billion, one hundred fifty-nine million, three hundred forty-eight thousand, nine hundred sixty-seven".