21470588670 has 32 divisors (see below), whose sum is σ = 51534800928. Its totient is φ = 5724891648.

The previous prime is 21470588621. The next prime is 21470588723. The reversal of 21470588670 is 7688507412.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305922 + ... + 369498.

It is an arithmetic number, because the mean of its divisors is an integer number (1610462529).

Almost surely, 2^21470588670 is an apocalyptic number.

21470588670 is an abundant number, since it is smaller than the sum of its proper divisors (30064212258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21470588670 is a wasteful number, since it uses less digits than its factorization.

21470588670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74844.

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 21470588670 in words is "twenty-one billion, four hundred seventy million, five hundred eighty-eight thousand, six hundred seventy".