21527202850 has 48 divisors (see below), whose sum is σ = 42414526368. Its totient is φ = 8100803840.

The previous prime is 21527202839. The next prime is 21527202859. The reversal of 21527202850 is 5820272512.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (21527202859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2718597 + ... + 2726503.

It is an arithmetic number, because the mean of its divisors is an integer number (883635966).

Almost surely, 2^21527202850 is an apocalyptic number.

21527202850 is a deficient number, since it is larger than the sum of its proper divisors (20887323518).

21527202850 is a wasteful number, since it uses less digits than its factorization.

21527202850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11139 (or 11134 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The spelling of 21527202850 in words is "twenty-one billion, five hundred twenty-seven million, two hundred two thousand, eight hundred fifty".