21154650150 has 24 divisors (see below), whose sum is σ = 52463532744. Its totient is φ = 5641240000.

The previous prime is 21154650119. The next prime is 21154650151. The reversal of 21154650150 is 5105645112.

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 (21154650151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70515351 + ... + 70515650.

It is an arithmetic number, because the mean of its divisors is an integer number (2185980531).

Almost surely, 2^21154650150 is an apocalyptic number.

21154650150 is an abundant number, since it is smaller than the sum of its proper divisors (31308882594).

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

21154650150 is a wasteful number, since it uses less digits than its factorization.

21154650150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141031016 (or 141031011 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 21154650150 in words is "twenty-one billion, one hundred fifty-four million, six hundred fifty thousand, one hundred fifty".