21159253096 has 32 divisors (see below), whose sum is σ = 39994495200. Its totient is φ = 10494128320.

The previous prime is 21159253069. The next prime is 21159253097. The reversal of 21159253096 is 69035295112.

It is not an unprimeable number, because it can be changed into a prime (21159253097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3982890 + ... + 3988198.

It is an arithmetic number, because the mean of its divisors is an integer number (1249827975).

Almost surely, 2^21159253096 is an apocalyptic number.

It is an amenable number.

21159253096 is a deficient number, since it is larger than the sum of its proper divisors (18835242104).

21159253096 is a wasteful number, since it uses less digits than its factorization.

21159253096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9249 (or 9245 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 43.

The spelling of 21159253096 in words is "twenty-one billion, one hundred fifty-nine million, two hundred fifty-three thousand, ninety-six".