16798532464 has 160 divisors (see below), whose sum is σ = 39597465600. Its totient is φ = 6751641600.

The previous prime is 16798532437. The next prime is 16798532477. The reversal of 16798532464 is 46423589761.

It is a super-2 number, since 2×16798532464² (a number of 21 digits) contains 22 as substring.

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, 28327752 + ... + 28328344.

It is an arithmetic number, because the mean of its divisors is an integer number (247484160).

Almost surely, 2^16798532464 is an apocalyptic number.

16798532464 is a gapful number since it is divisible by the number (14) 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 16798532464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19798732800).

16798532464 is an abundant number, since it is smaller than the sum of its proper divisors (22798933136).

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

16798532464 is a wasteful number, since it uses less digits than its factorization.

16798532464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879 (or 873 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 55.

The spelling of 16798532464 in words is "sixteen billion, seven hundred ninety-eight million, five hundred thirty-two thousand, four hundred sixty-four".