16533667620 has 48 divisors (see below), whose sum is σ = 51438078720. Its totient is φ = 4408977888.

The previous prime is 16533667613. The next prime is 16533667637. The reversal of 16533667620 is 2676633561.

16533667620 is a `hidden beast` number, since 16 + 5 + 3 + 3 + 6 + 6 + 7 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15308412 + ... + 15309491.

It is an arithmetic number, because the mean of its divisors is an integer number (1071626640).

Almost surely, 2^16533667620 is an apocalyptic number.

16533667620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16533667620 is an abundant number, since it is smaller than the sum of its proper divisors (34904411100).

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

16533667620 is a wasteful number, since it uses less digits than its factorization.

16533667620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30617921 (or 30617913 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 45.

The spelling of 16533667620 in words is "sixteen billion, five hundred thirty-three million, six hundred sixty-seven thousand, six hundred twenty".