978256011 has 8 divisors (see below), whose sum is σ = 1320056640. Its totient is φ = 644313032.

The previous prime is 978256009. The next prime is 978256031. The reversal of 978256011 is 110652879.

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 978256011 - 2¹ = 978256009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (978256031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1964121 + ... + 1964618.

It is an arithmetic number, because the mean of its divisors is an integer number (165007080).

Almost surely, 2^978256011 is an apocalyptic number.

978256011 is a deficient number, since it is larger than the sum of its proper divisors (341800629).

978256011 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 13 representation: 978256011 = (127896015)₁₃.

978256011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928825.

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 978256011 is about 31277.0844389307. The cubic root of 978256011 is about 992.6988262636.

The spelling of 978256011 in words is "nine hundred seventy-eight million, two hundred fifty-six thousand, eleven".