16779152018 has 16 divisors (see below), whose sum is σ = 25424990424. Its totient is φ = 8304201600.

The previous prime is 16779152009. The next prime is 16779152041. The reversal of 16779152018 is 81025197761.

It can be written as a sum of positive squares in 4 ways, for example, as 14670781129 + 2108370889 = 121123^2 + 45917^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890996 + ... + 909632.

Almost surely, 2^16779152018 is an apocalyptic number.

16779152018 is a deficient number, since it is larger than the sum of its proper divisors (8645838406).

16779152018 is a wasteful number, since it uses less digits than its factorization.

16779152018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23197.

The product of its (nonzero) digits is 211680, while the sum is 47.

The spelling of 16779152018 in words is "sixteen billion, seven hundred seventy-nine million, one hundred fifty-two thousand, eighteen".