21748052950 has 24 divisors (see below), whose sum is σ = 43563024288. Its totient is φ = 8030050080.

The previous prime is 21748052873. The next prime is 21748053023. The reversal of 21748052950 is 5925084712.

It is a junction number, because it is equal to n+sod(n) for n = 21748052897 and 21748052906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16728622 + ... + 16729921.

It is an arithmetic number, because the mean of its divisors is an integer number (1815126012).

Almost surely, 2^21748052950 is an apocalyptic number.

21748052950 is an abundant number, since it is smaller than the sum of its proper divisors (21814971338).

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

21748052950 is a wasteful number, since it uses less digits than its factorization.

21748052950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33458568 (or 33458563 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 21748052950 in words is "twenty-one billion, seven hundred forty-eight million, fifty-two thousand, nine hundred fifty".