16506655145 has 48 divisors (see below), whose sum is σ = 21165194160. Its totient is φ = 12343296000.

The previous prime is 16506655093. The next prime is 16506655153. The reversal of 16506655145 is 54155660561.

It is a happy number.

It can be written as a sum of positive squares in 24 ways, for example, as 14184571801 + 2322083344 = 119099^2 + 48188^2 .

It is not a de Polignac number, because 16506655145 - 2⁸ = 16506654889 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16506655096 and 16506655105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58742405 + ... + 58742685.

It is an arithmetic number, because the mean of its divisors is an integer number (440941545).

Almost surely, 2^16506655145 is an apocalyptic number.

It is an amenable number.

16506655145 is a deficient number, since it is larger than the sum of its proper divisors (4658539015).

16506655145 is a wasteful number, since it uses less digits than its factorization.

16506655145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 44.

The spelling of 16506655145 in words is "sixteen billion, five hundred six million, six hundred fifty-five thousand, one hundred forty-five".