16787133450 has 72 divisors (see below), whose sum is σ = 45192420000. Its totient is φ = 4467538080.

The previous prime is 16787133437. The next prime is 16787133457. The reversal of 16787133450 is 5433178761.

16787133450 is a `hidden beast` number, since 1 + 67 + 8 + 7 + 133 + 450 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 16787133396 and 16787133405.

It is not an unprimeable number, because it can be changed into a prime (16787133457) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 187171 + ... + 261929.

It is an arithmetic number, because the mean of its divisors is an integer number (627672500).

Almost surely, 2^16787133450 is an apocalyptic number.

16787133450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16787133450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22596210000).

16787133450 is an abundant number, since it is smaller than the sum of its proper divisors (28405286550).

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

16787133450 is a wasteful number, since it uses less digits than its factorization.

16787133450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75276 (or 75268 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 16787133450 in words is "sixteen billion, seven hundred eighty-seven million, one hundred thirty-three thousand, four hundred fifty".