16494712772078 has 16 divisors (see below), whose sum is σ = 25415319309984. Its totient is φ = 8023019415840.

The previous prime is 16494712772077. The next prime is 16494712772093. The reversal of 16494712772078 is 87027721749461.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16494712772077) 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, 19520225 + ... + 20347692.

It is an arithmetic number, because the mean of its divisors is an integer number (1588457456874).

Almost surely, 2^{16494712772078} is an apocalyptic number.

16494712772078 is a deficient number, since it is larger than the sum of its proper divisors (8920606537906).

16494712772078 is a wasteful number, since it uses less digits than its factorization.

16494712772078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39873547.

The product of its (nonzero) digits is 66382848, while the sum is 65.

The spelling of 16494712772078 in words is "sixteen trillion, four hundred ninety-four billion, seven hundred twelve million, seven hundred seventy-two thousand, seventy-eight".