16920854450 has 12 divisors (see below), whose sum is σ = 31472789370. Its totient is φ = 6768341760.

The previous prime is 16920854407. The next prime is 16920854459. The reversal of 16920854450 is 5445802961.

It can be written as a sum of positive squares in 3 ways, for example, as 10476136609 + 6444717841 = 102353^2 + 80279^2 .

It is not an unprimeable number, because it can be changed into a prime (16920854459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 169208495 + ... + 169208594.

Almost surely, 2^16920854450 is an apocalyptic number.

16920854450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16920854450 is a deficient number, since it is larger than the sum of its proper divisors (14551934920).

16920854450 is a wasteful number, since it uses less digits than its factorization.

16920854450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338417101 (or 338417096 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 16920854450 in words is "sixteen billion, nine hundred twenty million, eight hundred fifty-four thousand, four hundred fifty".