21037960870 has 32 divisors (see below), whose sum is σ = 40103188128. Its totient is φ = 7918729728.

The previous prime is 21037960849. The next prime is 21037960871. The reversal of 21037960870 is 7806973012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21037960871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1593637 + ... + 1606783.

It is an arithmetic number, because the mean of its divisors is an integer number (1253224629).

Almost surely, 2^21037960870 is an apocalyptic number.

21037960870 is a deficient number, since it is larger than the sum of its proper divisors (19065227258).

21037960870 is a wasteful number, since it uses less digits than its factorization.

21037960870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22584.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 21037960870 in words is "twenty-one billion, thirty-seven million, nine hundred sixty thousand, eight hundred seventy".