21776006324850 has 24 divisors (see below), whose sum is σ = 54004495686000. Its totient is φ = 5806935019920.

The previous prime is 21776006324843. The next prime is 21776006324851. The reversal of 21776006324850 is 5842360067712.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21776006324793 and 21776006324802.

It is not an unprimeable number, because it can be changed into a prime (21776006324851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72586687600 + ... + 72586687899.

It is an arithmetic number, because the mean of its divisors is an integer number (2250187320250).

Almost surely, 2^{21776006324850} is an apocalyptic number.

21776006324850 is an abundant number, since it is smaller than the sum of its proper divisors (32228489361150).

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

21776006324850 is a wasteful number, since it uses less digits than its factorization.

21776006324850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145173375514 (or 145173375509 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 21776006324850 in words is "twenty-one trillion, seven hundred seventy-six billion, six million, three hundred twenty-four thousand, eight hundred fifty".