21036677234 has 8 divisors (see below), whose sum is σ = 33411193308. Its totient is φ = 9899612800.

The previous prime is 21036677231. The next prime is 21036677257. The reversal of 21036677234 is 43277663012.

It can be written as a sum of positive squares in 2 ways, for example, as 20706346609 + 330330625 = 143897^2 + 18175^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21036677191 and 21036677200.

It is not an unprimeable number, because it can be changed into a prime (21036677231) 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, 309362867 + ... + 309362934.

Almost surely, 2^21036677234 is an apocalyptic number.

21036677234 is a deficient number, since it is larger than the sum of its proper divisors (12374516074).

21036677234 is a wasteful number, since it uses less digits than its factorization.

21036677234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618725820.

The product of its (nonzero) digits is 254016, while the sum is 41.

The spelling of 21036677234 in words is "twenty-one billion, thirty-six million, six hundred seventy-seven thousand, two hundred thirty-four".