21848138050 has 12 divisors (see below), whose sum is σ = 40637536866. Its totient is φ = 8739255200.

The previous prime is 21848138009. The next prime is 21848138069. The reversal of 21848138050 is 5083184812.

It can be written as a sum of positive squares in 3 ways, for example, as 16996597641 + 4851540409 = 130371^2 + 69653^2 .

It is a super-2 number, since 2×21848138050² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21848137994 and 21848138012.

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, 218481331 + ... + 218481430.

Almost surely, 2^21848138050 is an apocalyptic number.

21848138050 is a deficient number, since it is larger than the sum of its proper divisors (18789398816).

21848138050 is a wasteful number, since it uses less digits than its factorization.

21848138050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436962773 (or 436962768 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 21848138050 in words is "twenty-one billion, eight hundred forty-eight million, one hundred thirty-eight thousand, fifty".