16494149378028 has 48 divisors (see below), whose sum is σ = 43986221524224. Its totient is φ = 4712418767040.

The previous prime is 16494149378027. The next prime is 16494149378029. The reversal of 16494149378028 is 82087394149461.

It is an interprime number because it is at equal distance from previous prime (16494149378027) and next prime (16494149378029).

It is a self number, because there is not a number n which added to its sum of digits gives 16494149378028.

It is not an unprimeable number, because it can be changed into a prime (16494149378027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2024958 + ... + 6090053.

It is an arithmetic number, because the mean of its divisors is an integer number (916379615088).

Almost surely, 2^{16494149378028} is an apocalyptic number.

It is an amenable number.

16494149378028 is an abundant number, since it is smaller than the sum of its proper divisors (27492072146196).

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

16494149378028 is a wasteful number, since it uses less digits than its factorization.

16494149378028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8139222 (or 8139220 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 66.

The spelling of 16494149378028 in words is "sixteen trillion, four hundred ninety-four billion, one hundred forty-nine million, three hundred seventy-eight thousand, twenty-eight".