10215133540 has 12 divisors (see below), whose sum is σ = 21451780476. Its totient is φ = 4086053408.

The previous prime is 10215133531. The next prime is 10215133573. The reversal of 10215133540 is 4533151201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3474395136 + 6740738404 = 58944^2 + 82102^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255378319 + ... + 255378358.

It is an arithmetic number, because the mean of its divisors is an integer number (1787648373).

Almost surely, 2^10215133540 is an apocalyptic number.

10215133540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10215133540 is an abundant number, since it is smaller than the sum of its proper divisors (11236646936).

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

10215133540 is a wasteful number, since it uses less digits than its factorization.

10215133540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510756686 (or 510756684 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 10215133540 its reverse (4533151201), we get a palindrome (14748284741).

The spelling of 10215133540 in words is "ten billion, two hundred fifteen million, one hundred thirty-three thousand, five hundred forty".