21150023044350 has 24 divisors (see below), whose sum is σ = 52452057150360. Its totient is φ = 5640006145120.

The previous prime is 21150023044261. The next prime is 21150023044351. The reversal of 21150023044350 is 5344032005112.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21150023044351) 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, 70500076665 + ... + 70500076964.

It is an arithmetic number, because the mean of its divisors is an integer number (2185502381265).

Almost surely, 2^{21150023044350} is an apocalyptic number.

21150023044350 is an abundant number, since it is smaller than the sum of its proper divisors (31302034106010).

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

21150023044350 is a wasteful number, since it uses less digits than its factorization.

21150023044350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141000153644 (or 141000153639 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 21150023044350 its reverse (5344032005112), we get a palindrome (26494055049462).

The spelling of 21150023044350 in words is "twenty-one trillion, one hundred fifty billion, twenty-three million, forty-four thousand, three hundred fifty".