16551795528 has 128 divisors (see below), whose sum is σ = 47557632000. Its totient is φ = 5328348480.

The previous prime is 16551795487. The next prime is 16551795529. The reversal of 16551795528 is 82559715561.

16551795528 is a `hidden beast` number, since 1 + 65 + 51 + 7 + 9 + 5 + 528 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (16551795529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3660453 + ... + 3664971.

It is an arithmetic number, because the mean of its divisors is an integer number (371544000).

Almost surely, 2^16551795528 is an apocalyptic number.

16551795528 is a gapful number since it is divisible by the number (18) 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 16551795528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23778816000).

16551795528 is an abundant number, since it is smaller than the sum of its proper divisors (31005836472).

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

16551795528 is a wasteful number, since it uses less digits than its factorization.

16551795528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112 (or 5102 counting only the distinct ones).

The product of its digits is 3780000, while the sum is 54.

The spelling of 16551795528 in words is "sixteen billion, five hundred fifty-one million, seven hundred ninety-five thousand, five hundred twenty-eight".