16978851017422 has 32 divisors (see below), whose sum is σ = 29658070052352. Its totient is φ = 7138804536864.

The previous prime is 16978851017407. The next prime is 16978851017437. The reversal of 16978851017422 is 22471015887961.

16978851017422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16978851017407) and next prime (16978851017437).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8816893 + ... + 10568599.

It is an arithmetic number, because the mean of its divisors is an integer number (926814689136).

Almost surely, 2^{16978851017422} is an apocalyptic number.

16978851017422 is a deficient number, since it is larger than the sum of its proper divisors (12679219034930).

16978851017422 is a wasteful number, since it uses less digits than its factorization.

16978851017422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764832.

The product of its (nonzero) digits is 13547520, while the sum is 61.

The spelling of 16978851017422 in words is "sixteen trillion, nine hundred seventy-eight billion, eight hundred fifty-one million, seventeen thousand, four hundred twenty-two".