16399848890 has 16 divisors (see below), whose sum is σ = 29544493608. Its totient is φ = 6554436096.

The previous prime is 16399848869. The next prime is 16399848893. The reversal of 16399848890 is 9884899361.

It can be written as a sum of positive squares in 4 ways, for example, as 16260585289 + 139263601 = 127517^2 + 11801^2 .

It is a super-2 number, since 2×16399848890² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16399848893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675407 + ... + 699266.

Almost surely, 2^16399848890 is an apocalyptic number.

16399848890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16399848890 is a deficient number, since it is larger than the sum of its proper divisors (13144644718).

16399848890 is a wasteful number, since it uses less digits than its factorization.

16399848890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375873.

The product of its (nonzero) digits is 26873856, while the sum is 65.

The spelling of 16399848890 in words is "sixteen billion, three hundred ninety-nine million, eight hundred forty-eight thousand, eight hundred ninety".