21037996750 has 16 divisors (see below), whose sum is σ = 39383130384. Its totient is φ = 8415198600.

The previous prime is 21037996739. The next prime is 21037996769. The reversal of 21037996750 is 5769973012.

It is a junction number, because it is equal to n+sod(n) for n = 21037996694 and 21037996703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42075744 + ... + 42076243.

It is an arithmetic number, because the mean of its divisors is an integer number (2461445649).

Almost surely, 2^21037996750 is an apocalyptic number.

21037996750 is a deficient number, since it is larger than the sum of its proper divisors (18345133634).

21037996750 is an equidigital number, since it uses as much as digits as its factorization.

21037996750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84152004 (or 84151994 counting only the distinct ones).

The product of its (nonzero) digits is 714420, while the sum is 49.

The spelling of 21037996750 in words is "twenty-one billion, thirty-seven million, nine hundred ninety-six thousand, seven hundred fifty".