978780348411 has 4 divisors (see below), whose sum is σ = 1305040464552. Its totient is φ = 652520232272.

The previous prime is 978780348407. The next prime is 978780348443. The reversal of 978780348411 is 114843087879.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 978780348411 - 2² = 978780348407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (978780348811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163130058066 + ... + 163130058071.

It is an arithmetic number, because the mean of its divisors is an integer number (326260116138).

Almost surely, 2^978780348411 is an apocalyptic number.

978780348411 is a deficient number, since it is larger than the sum of its proper divisors (326260116141).

978780348411 is a wasteful number, since it uses less digits than its factorization.

978780348411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326260116140.

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 978780348411 in words is "nine hundred seventy-eight billion, seven hundred eighty million, three hundred forty-eight thousand, four hundred eleven".