21152502150 has 48 divisors (see below), whose sum is σ = 56493457104. Its totient is φ = 5206769280.

The previous prime is 21152502131. The next prime is 21152502157. The reversal of 21152502150 is 5120525112.

It is a self number, because there is not a number n which added to its sum of digits gives 21152502150.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21152502157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5421769 + ... + 5425668.

It is an arithmetic number, because the mean of its divisors is an integer number (1176947023).

Almost surely, 2^21152502150 is an apocalyptic number.

21152502150 is an abundant number, since it is smaller than the sum of its proper divisors (35340954954).

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

21152502150 is a wasteful number, since it uses less digits than its factorization.

21152502150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10847465 (or 10847460 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The spelling of 21152502150 in words is "twenty-one billion, one hundred fifty-two million, five hundred two thousand, one hundred fifty".