16506145255 has 8 divisors (see below), whose sum is σ = 19859092992. Its totient is φ = 13170437088.

The previous prime is 16506145237. The next prime is 16506145277. The reversal of 16506145255 is 55254160561.

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 16506145255 - 2⁷ = 16506145127 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 4307784 + ... + 4311613.

It is an arithmetic number, because the mean of its divisors is an integer number (2482386624).

Almost surely, 2^16506145255 is an apocalyptic number.

16506145255 is a deficient number, since it is larger than the sum of its proper divisors (3352947737).

16506145255 is an equidigital number, since it uses as much as digits as its factorization.

16506145255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8619785.

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 16506145255 in words is "sixteen billion, five hundred six million, one hundred forty-five thousand, two hundred fifty-five".