16978993151 has 8 divisors (see below), whose sum is σ = 17985639024. Its totient is φ = 15973223040.

The previous prime is 16978993099. The next prime is 16978993169. The reversal of 16978993151 is 15139987961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16978993151 - 2¹⁴ = 16978976767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16978993651) 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, 178805 + ... + 256766.

It is an arithmetic number, because the mean of its divisors is an integer number (2248204878).

Almost surely, 2^16978993151 is an apocalyptic number.

16978993151 is a deficient number, since it is larger than the sum of its proper divisors (1006645873).

16978993151 is a wasteful number, since it uses less digits than its factorization.

16978993151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437881.

The product of its digits is 3674160, while the sum is 59.

The spelling of 16978993151 in words is "sixteen billion, nine hundred seventy-eight million, nine hundred ninety-three thousand, one hundred fifty-one".