16778466325 has 48 divisors (see below), whose sum is σ = 22335177600. Its totient is φ = 12465273600.

The previous prime is 16778466301. The next prime is 16778466337. The reversal of 16778466325 is 52366487761.

It is not a de Polignac number, because 16778466325 - 2¹¹ = 16778464277 is a prime.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10401219 + ... + 10402831.

It is an arithmetic number, because the mean of its divisors is an integer number (465316200).

Almost surely, 2^16778466325 is an apocalyptic number.

It is an amenable number.

16778466325 is a deficient number, since it is larger than the sum of its proper divisors (5556711275).

16778466325 is a wasteful number, since it uses less digits than its factorization.

16778466325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062 (or 2057 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 55.

The spelling of 16778466325 in words is "sixteen billion, seven hundred seventy-eight million, four hundred sixty-six thousand, three hundred twenty-five".