21158210148 has 144 divisors (see below), whose sum is σ = 52743075840. Its totient is φ = 6597702720.

The previous prime is 21158210131. The next prime is 21158210159. The reversal of 21158210148 is 84101285112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55826223 + ... + 55826601.

It is an arithmetic number, because the mean of its divisors is an integer number (366271360).

Almost surely, 2^21158210148 is an apocalyptic number.

It is an amenable number.

21158210148 is an abundant number, since it is smaller than the sum of its proper divisors (31584865692).

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

21158210148 is a wasteful number, since it uses less digits than its factorization.

21158210148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 33.

The spelling of 21158210148 in words is "twenty-one billion, one hundred fifty-eight million, two hundred ten thousand, one hundred forty-eight".