21340041050 has 12 divisors (see below), whose sum is σ = 39692476446. Its totient is φ = 8536016400.

The previous prime is 21340041029. The next prime is 21340041067. The reversal of 21340041050 is 5014004312.

It can be written as a sum of positive squares in 3 ways, for example, as 20289438481 + 1050602569 = 142441^2 + 32413^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 213400361 + ... + 213400460.

Almost surely, 2^21340041050 is an apocalyptic number.

21340041050 is a deficient number, since it is larger than the sum of its proper divisors (18352435396).

21340041050 is a wasteful number, since it uses less digits than its factorization.

21340041050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426800833 (or 426800828 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 21340041050 its reverse (5014004312), we get a palindrome (26354045362).

The spelling of 21340041050 in words is "twenty-one billion, three hundred forty million, forty-one thousand, fifty".