21437136130 has 16 divisors (see below), whose sum is σ = 38670194304. Its totient is φ = 8556332400.

The previous prime is 21437136079. The next prime is 21437136157. The reversal of 21437136130 is 3163173412.

It is a junction number, because it is equal to n+sod(n) for n = 21437136092 and 21437136101.

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, 2310396 + ... + 2319655.

It is an arithmetic number, because the mean of its divisors is an integer number (2416887144).

Almost surely, 2^21437136130 is an apocalyptic number.

21437136130 is a deficient number, since it is larger than the sum of its proper divisors (17233058174).

21437136130 is a wasteful number, since it uses less digits than its factorization.

21437136130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4630521.

The product of its (nonzero) digits is 9072, while the sum is 31.

The spelling of 21437136130 in words is "twenty-one billion, four hundred thirty-seven million, one hundred thirty-six thousand, one hundred thirty".