16528958712 has 128 divisors (see below), whose sum is σ = 53544000000. Its totient is φ = 4722538464.

The previous prime is 16528958701. The next prime is 16528958773. The reversal of 16528958712 is 21785982561.

16528958712 is a `hidden beast` number, since 1 + 6 + 52 + 8 + 9 + 587 + 1 + 2 = 666.

It is a super-2 number, since 2×16528958712² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 37462 + ... + 185637.

It is an arithmetic number, because the mean of its divisors is an integer number (418312500).

Almost surely, 2^16528958712 is an apocalyptic number.

16528958712 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 16528958712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26772000000).

16528958712 is an abundant number, since it is smaller than the sum of its proper divisors (37015041288).

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

16528958712 is a wasteful number, since it uses less digits than its factorization.

16528958712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223135 (or 223111 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 54.

The spelling of 16528958712 in words is "sixteen billion, five hundred twenty-eight million, nine hundred fifty-eight thousand, seven hundred twelve".