978046944555 has 16 divisors (see below), whose sum is σ = 1594401058080. Its totient is φ = 511783054848.

The previous prime is 978046944529. The next prime is 978046944571. The reversal of 978046944555 is 555449640879.

It is not a de Polignac number, because 978046944555 - 2⁶ = 978046944491 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615123070 + ... + 615124659.

It is an arithmetic number, because the mean of its divisors is an integer number (99650066130).

Almost surely, 2^978046944555 is an apocalyptic number.

978046944555 is a deficient number, since it is larger than the sum of its proper divisors (616354113525).

978046944555 is a wasteful number, since it uses less digits than its factorization.

978046944555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230247790.

The product of its (nonzero) digits is 217728000, while the sum is 66.

The spelling of 978046944555 in words is "nine hundred seventy-eight billion, forty-six million, nine hundred forty-four thousand, five hundred fifty-five".