16275177505 has 4 divisors (see below), whose sum is σ = 19530213012. Its totient is φ = 13020142000.

The previous prime is 16275177497. The next prime is 16275177517. The reversal of 16275177505 is 50577157261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50577157261 = 4463 ⋅11332547.

It can be written as a sum of positive squares in 2 ways, for example, as 10666964961 + 5608212544 = 103281^2 + 74888^2 .

It is not a de Polignac number, because 16275177505 - 2³ = 16275177497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1627517746 + ... + 1627517755.

It is an arithmetic number, because the mean of its divisors is an integer number (4882553253).

Almost surely, 2^16275177505 is an apocalyptic number.

It is an amenable number.

16275177505 is a deficient number, since it is larger than the sum of its proper divisors (3255035507).

16275177505 is an equidigital number, since it uses as much as digits as its factorization.

16275177505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255035506.

The product of its (nonzero) digits is 514500, while the sum is 46.

The spelling of 16275177505 in words is "sixteen billion, two hundred seventy-five million, one hundred seventy-seven thousand, five hundred five".