16210631440 has 20 divisors (see below), whose sum is σ = 37689718284. Its totient is φ = 6484252544.

The previous prime is 16210631431. The next prime is 16210631443. The reversal of 16210631440 is 4413601261.

It can be written as a sum of positive squares in 2 ways, for example, as 9879564816 + 6331066624 = 99396^2 + 79568^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 16210631399 and 16210631408.

It is not an unprimeable number, because it can be changed into a prime (16210631443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101316367 + ... + 101316526.

Almost surely, 2^16210631440 is an apocalyptic number.

16210631440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16210631440 is an abundant number, since it is smaller than the sum of its proper divisors (21479086844).

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

16210631440 is a wasteful number, since it uses less digits than its factorization.

16210631440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202632906 (or 202632900 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 16210631440 in words is "sixteen billion, two hundred ten million, six hundred thirty-one thousand, four hundred forty".