16605651051 has 32 divisors (see below), whose sum is σ = 28416096000. Its totient is φ = 9472026240.

The previous prime is 16605651043. The next prime is 16605651059. The reversal of 16605651051 is 15015650661.

It is an interprime number because it is at equal distance from previous prime (16605651043) and next prime (16605651059).

It is not a de Polignac number, because 16605651051 - 2³ = 16605651043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16605650997 and 16605651015.

It is not an unprimeable number, because it can be changed into a prime (16605651059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1639401 + ... + 1649498.

It is an arithmetic number, because the mean of its divisors is an integer number (888003000).

Almost surely, 2^16605651051 is an apocalyptic number.

16605651051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16605651051 is a deficient number, since it is larger than the sum of its proper divisors (11810444949).

16605651051 is a wasteful number, since it uses less digits than its factorization.

16605651051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288936 (or 3288930 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 16605651051 in words is "sixteen billion, six hundred five million, six hundred fifty-one thousand, fifty-one".