21037360129 has 8 divisors (see below), whose sum is σ = 21603673728. Its totient is φ = 20475992880.

The previous prime is 21037360103. The next prime is 21037360147. The reversal of 21037360129 is 92106373012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21037360129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21037360094 and 21037360103.

It is not an unprimeable number, because it can be changed into a prime (21037360829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1227967 + ... + 1244980.

It is an arithmetic number, because the mean of its divisors is an integer number (2700459216).

Almost surely, 2^21037360129 is an apocalyptic number.

It is an amenable number.

21037360129 is a deficient number, since it is larger than the sum of its proper divisors (566313599).

21037360129 is a wasteful number, since it uses less digits than its factorization.

21037360129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473175.

The product of its (nonzero) digits is 13608, while the sum is 34.

The spelling of 21037360129 in words is "twenty-one billion, thirty-seven million, three hundred sixty thousand, one hundred twenty-nine".