16778445026 has 16 divisors (see below), whose sum is σ = 30276893760. Its totient is φ = 6812300880.

The previous prime is 16778444993. The next prime is 16778445029. The reversal of 16778445026 is 62054487761.

It is not an unprimeable number, because it can be changed into a prime (16778445029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31538165 + ... + 31538696.

It is an arithmetic number, because the mean of its divisors is an integer number (1892305860).

Almost surely, 2^16778445026 is an apocalyptic number.

16778445026 is a deficient number, since it is larger than the sum of its proper divisors (13498448734).

16778445026 is a wasteful number, since it uses less digits than its factorization.

16778445026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63076889.

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 16778445026 in words is "sixteen billion, seven hundred seventy-eight million, four hundred forty-five thousand, twenty-six".