16263210509 has 16 divisors (see below), whose sum is σ = 20121077760. Its totient is φ = 12800211840.

The previous prime is 16263210503. The next prime is 16263210581. The reversal of 16263210509 is 90501236261.

It is not a de Polignac number, because 16263210509 - 2⁸ = 16263210253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16263210503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450464 + ... + 485225.

It is an arithmetic number, because the mean of its divisors is an integer number (1257567360).

Almost surely, 2^16263210509 is an apocalyptic number.

It is an amenable number.

16263210509 is a deficient number, since it is larger than the sum of its proper divisors (3857867251).

16263210509 is a wasteful number, since it uses less digits than its factorization.

16263210509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935900.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 16263210509 in words is "sixteen billion, two hundred sixty-three million, two hundred ten thousand, five hundred nine".