16465508712 has 128 divisors (see below), whose sum is σ = 48547555200. Its totient is φ = 5152896000.

The previous prime is 16465508681. The next prime is 16465508747. The reversal of 16465508712 is 21780556461.

16465508712 is a `hidden beast` number, since 1 + 6 + 4 + 6 + 550 + 87 + 12 = 666.

It is a super-2 number, since 2×16465508712² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1540587 + ... + 1551237.

It is an arithmetic number, because the mean of its divisors is an integer number (379277775).

Almost surely, 2^16465508712 is an apocalyptic number.

16465508712 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 16465508712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24273777600).

16465508712 is an abundant number, since it is smaller than the sum of its proper divisors (32082046488).

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

16465508712 is a wasteful number, since it uses less digits than its factorization.

16465508712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11104 (or 11094 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 16465508712 in words is "sixteen billion, four hundred sixty-five million, five hundred eight thousand, seven hundred twelve".