20705304470 has 16 divisors (see below), whose sum is σ = 37301948928. Its totient is φ = 8274921600.

The previous prime is 20705304469. The next prime is 20705304491. The reversal of 20705304470 is 7440350702.

It is a super-4 number, since 4×20705304470⁴ (a number of 42 digits) contains 4444 as substring.

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, 887939 + ... + 910958.

It is an arithmetic number, because the mean of its divisors is an integer number (2331371808).

Almost surely, 2^20705304470 is an apocalyptic number.

20705304470 is a deficient number, since it is larger than the sum of its proper divisors (16596644458).

20705304470 is a wasteful number, since it uses less digits than its factorization.

20705304470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800055.

The product of its (nonzero) digits is 23520, while the sum is 32.

The spelling of 20705304470 in words is "twenty billion, seven hundred five million, three hundred four thousand, four hundred seventy".