21158096156 has 6 divisors (see below), whose sum is σ = 37026668280. Its totient is φ = 10579048076.

The previous prime is 21158096149. The next prime is 21158096177. The reversal of 21158096156 is 65169085112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2644762016 + ... + 2644762023.

It is an arithmetic number, because the mean of its divisors is an integer number (6171111380).

Almost surely, 2^21158096156 is an apocalyptic number.

It is an amenable number.

21158096156 is a deficient number, since it is larger than the sum of its proper divisors (15868572124).

21158096156 is a wasteful number, since it uses less digits than its factorization.

21158096156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289524043 (or 5289524041 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 44.

The spelling of 21158096156 in words is "twenty-one billion, one hundred fifty-eight million, ninety-six thousand, one hundred fifty-six".