10216535640 has 32 divisors (see below), whose sum is σ = 30649607280. Its totient is φ = 2724409472.

The previous prime is 10216535621. The next prime is 10216535671. The reversal of 10216535640 is 4653561201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42568779 + ... + 42569018.

Almost surely, 2^10216535640 is an apocalyptic number.

10216535640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10216535640 is an abundant number, since it is smaller than the sum of its proper divisors (20433071640).

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

10216535640 is a wasteful number, since it uses less digits than its factorization.

10216535640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85137811 (or 85137807 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 10216535640 in words is "ten billion, two hundred sixteen million, five hundred thirty-five thousand, six hundred forty".