16365423516 has 48 divisors (see below), whose sum is σ = 41369685504. Its totient is φ = 5005354176.

The previous prime is 16365423479. The next prime is 16365423517. The reversal of 16365423516 is 61532456361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16365423517) 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, 288040 + ... + 340143.

It is an arithmetic number, because the mean of its divisors is an integer number (861868448).

Almost surely, 2^16365423516 is an apocalyptic number.

It is an amenable number.

16365423516 is an abundant number, since it is smaller than the sum of its proper divisors (25004261988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16365423516 is a wasteful number, since it uses less digits than its factorization.

16365423516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628370 (or 628368 counting only the distinct ones).

The product of its digits is 388800, while the sum is 42.

Adding to 16365423516 its reverse (61532456361), we get a palindrome (77897879877).

The spelling of 16365423516 in words is "sixteen billion, three hundred sixty-five million, four hundred twenty-three thousand, five hundred sixteen".