16599494712 has 64 divisors (see below), whose sum is σ = 42250521600. Its totient is φ = 5433143040.

The previous prime is 16599494711. The next prime is 16599494713. The reversal of 16599494712 is 21749499561.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16599494711) and next prime (16599494713).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16599494711) 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, 1320537 + ... + 1333047.

It is an arithmetic number, because the mean of its divisors is an integer number (660164400).

Almost surely, 2^16599494712 is an apocalyptic number.

16599494712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16599494712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21125260800).

16599494712 is an abundant number, since it is smaller than the sum of its proper divisors (25651026888).

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

16599494712 is a wasteful number, since it uses less digits than its factorization.

16599494712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13516 (or 13512 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 57.

It can be divided in two parts, 1659949 and 4712, that added together give a palindrome (1664661).

The spelling of 16599494712 in words is "sixteen billion, five hundred ninety-nine million, four hundred ninety-four thousand, seven hundred twelve".