16026549978 has 16 divisors (see below), whose sum is σ = 33938576640. Its totient is φ = 5027937216.

The previous prime is 16026549907. The next prime is 16026549991. The reversal of 16026549978 is 87994562061.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78561418 + ... + 78561621.

It is an arithmetic number, because the mean of its divisors is an integer number (2121161040).

Almost surely, 2^16026549978 is an apocalyptic number.

16026549978 is an abundant number, since it is smaller than the sum of its proper divisors (17912026662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16026549978 is a wasteful number, since it uses less digits than its factorization.

16026549978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157123061.

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 16026549978 in words is "sixteen billion, twenty-six million, five hundred forty-nine thousand, nine hundred seventy-eight".