21037470070738 has 16 divisors (see below), whose sum is σ = 35535433317120. Its totient is φ = 9254019092400.

The previous prime is 21037470070709. The next prime is 21037470070907. The reversal of 21037470070738 is 83707007473012.

It is a super-2 number, since 2×21037470070738² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21037470070691 and 21037470070700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15423364473 + ... + 15423365836.

It is an arithmetic number, because the mean of its divisors is an integer number (2220964582320).

Almost surely, 2^{21037470070738} is an apocalyptic number.

21037470070738 is a deficient number, since it is larger than the sum of its proper divisors (14497963246382).

21037470070738 is a wasteful number, since it uses less digits than its factorization.

21037470070738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30846730353.

The product of its (nonzero) digits is 1382976, while the sum is 49.

The spelling of 21037470070738 in words is "twenty-one trillion, thirty-seven billion, four hundred seventy million, seventy thousand, seven hundred thirty-eight".