20788070673 has 4 divisors (see below), whose sum is σ = 27717427568. Its totient is φ = 13858713780.

The previous prime is 20788070669. The next prime is 20788070683. The reversal of 20788070673 is 37607088702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20788070673 - 2² = 20788070669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20788070683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3464678443 + ... + 3464678448.

It is an arithmetic number, because the mean of its divisors is an integer number (6929356892).

Almost surely, 2^20788070673 is an apocalyptic number.

It is an amenable number.

20788070673 is a deficient number, since it is larger than the sum of its proper divisors (6929356895).

20788070673 is an equidigital number, since it uses as much as digits as its factorization.

20788070673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6929356894.

The product of its (nonzero) digits is 790272, while the sum is 48.

The spelling of 20788070673 in words is "twenty billion, seven hundred eighty-eight million, seventy thousand, six hundred seventy-three".