16519225263 has 4 divisors (see below), whose sum is σ = 22025633688. Its totient is φ = 11012816840.

The previous prime is 16519225259. The next prime is 16519225361. The reversal of 16519225263 is 36252291561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36252291561 = 3 ⋅12084097187.

It is a cyclic number.

It is not a de Polignac number, because 16519225263 - 2² = 16519225259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16519221263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2753204208 + ... + 2753204213.

It is an arithmetic number, because the mean of its divisors is an integer number (5506408422).

Almost surely, 2^16519225263 is an apocalyptic number.

16519225263 is a deficient number, since it is larger than the sum of its proper divisors (5506408425).

16519225263 is an equidigital number, since it uses as much as digits as its factorization.

16519225263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5506408424.

The product of its digits is 194400, while the sum is 42.

The spelling of 16519225263 in words is "sixteen billion, five hundred nineteen million, two hundred twenty-five thousand, two hundred sixty-three".