21796426730 has 16 divisors (see below), whose sum is σ = 42251535144. Its totient is φ = 8047911360.

The previous prime is 21796426711. The next prime is 21796426741. The reversal of 21796426730 is 3762469712.

It can be written as a sum of positive squares in 4 ways, for example, as 6530094481 + 15266332249 = 80809^2 + 123557^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83832281 + ... + 83832540.

Almost surely, 2^21796426730 is an apocalyptic number.

21796426730 is a deficient number, since it is larger than the sum of its proper divisors (20455108414).

21796426730 is a wasteful number, since it uses less digits than its factorization.

21796426730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167664841.

The product of its (nonzero) digits is 762048, while the sum is 47.

The spelling of 21796426730 in words is "twenty-one billion, seven hundred ninety-six million, four hundred twenty-six thousand, seven hundred thirty".