20790806470 has 64 divisors (see below), whose sum is σ = 43303403520. Its totient is φ = 7039703808.

The previous prime is 20790806447. The next prime is 20790806479. The reversal of 20790806470 is 7460809702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20790806479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2757666 + ... + 2765194.

It is an arithmetic number, because the mean of its divisors is an integer number (676615680).

Almost surely, 2^20790806470 is an apocalyptic number.

20790806470 is an abundant number, since it is smaller than the sum of its proper divisors (22512597050).

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

20790806470 is a wasteful number, since it uses less digits than its factorization.

20790806470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8029.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 20790806470 in words is "twenty billion, seven hundred ninety million, eight hundred six thousand, four hundred seventy".