21150543151 has 4 divisors (see below), whose sum is σ = 21250782904. Its totient is φ = 21050303400.

The previous prime is 21150543053. The next prime is 21150543157. The reversal of 21150543151 is 15134505112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21150543151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21150543157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50119560 + ... + 50119981.

It is an arithmetic number, because the mean of its divisors is an integer number (5312695726).

Almost surely, 2^21150543151 is an apocalyptic number.

21150543151 is a deficient number, since it is larger than the sum of its proper divisors (100239753).

21150543151 is a wasteful number, since it uses less digits than its factorization.

21150543151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100239752.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 21150543151 in words is "twenty-one billion, one hundred fifty million, five hundred forty-three thousand, one hundred fifty-one".