16536622620 has 96 divisors (see below), whose sum is σ = 53087763456. Its totient is φ = 3767616000.

The previous prime is 16536622589. The next prime is 16536622651. The reversal of 16536622620 is 2622663561.

It is an interprime number because it is at equal distance from previous prime (16536622589) and next prime (16536622651).

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, 67320 + ... + 193920.

It is an arithmetic number, because the mean of its divisors is an integer number (552997536).

Almost surely, 2^16536622620 is an apocalyptic number.

16536622620 is a gapful number since it is divisible by the number (10) 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 16536622620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26543881728).

16536622620 is an abundant number, since it is smaller than the sum of its proper divisors (36551140836).

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

16536622620 is a wasteful number, since it uses less digits than its factorization.

16536622620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126931 (or 126929 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 16536622620 in words is "sixteen billion, five hundred thirty-six million, six hundred twenty-two thousand, six hundred twenty".