21291956792302 has 64 divisors (see below), whose sum is σ = 40684611502080. Its totient is φ = 8135745255936.

The previous prime is 21291956792279. The next prime is 21291956792363. The reversal of 21291956792302 is 20329765919212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65121043 + ... + 65447185.

It is an arithmetic number, because the mean of its divisors is an integer number (635697054720).

Almost surely, 2^{21291956792302} is an apocalyptic number.

21291956792302 is a deficient number, since it is larger than the sum of its proper divisors (19392654709778).

21291956792302 is a wasteful number, since it uses less digits than its factorization.

21291956792302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340625.

The product of its (nonzero) digits is 7348320, while the sum is 58.

The spelling of 21291956792302 in words is "twenty-one trillion, two hundred ninety-one billion, nine hundred fifty-six million, seven hundred ninety-two thousand, three hundred two".