16551016077 has 8 divisors (see below), whose sum is σ = 23366140416. Its totient is φ = 10384951232.

The previous prime is 16551016067. The next prime is 16551016087. The reversal of 16551016077 is 77061015561.

It is an interprime number because it is at equal distance from previous prime (16551016067) and next prime (16551016087).

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 16551016077 - 2⁴ = 16551016061 is a prime.

It is a super-2 number, since 2×16551016077² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16551016067) 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, 162264813 + ... + 162264914.

It is an arithmetic number, because the mean of its divisors is an integer number (2920767552).

Almost surely, 2^16551016077 is an apocalyptic number.

16551016077 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16551016077 is a deficient number, since it is larger than the sum of its proper divisors (6815124339).

16551016077 is a wasteful number, since it uses less digits than its factorization.

16551016077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324529747.

The product of its (nonzero) digits is 44100, while the sum is 39.

The spelling of 16551016077 in words is "sixteen billion, five hundred fifty-one million, sixteen thousand, seventy-seven".