21342555796 has 12 divisors (see below), whose sum is σ = 38054180052. Its totient is φ = 10469932928.

The previous prime is 21342555749. The next prime is 21342555797. The reversal of 21342555796 is 69755524312.

It can be written as a sum of positive squares in 2 ways, for example, as 14754960900 + 6587594896 = 121470^2 + 81164^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342555797) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 50336005 + ... + 50336428.

It is an arithmetic number, because the mean of its divisors is an integer number (3171181671).

Almost surely, 2^21342555796 is an apocalyptic number.

It is an amenable number.

21342555796 is a deficient number, since it is larger than the sum of its proper divisors (16711624256).

21342555796 is a wasteful number, since it uses less digits than its factorization.

21342555796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100672490 (or 100672488 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 49.

The spelling of 21342555796 in words is "twenty-one billion, three hundred forty-two million, five hundred fifty-five thousand, seven hundred ninety-six".