20720120070038 has 4 divisors (see below), whose sum is σ = 31080180105060. Its totient is φ = 10360060035018.

The previous prime is 20720120070007. The next prime is 20720120070059. The reversal of 20720120070038 is 83007002102702.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20720120069986 and 20720120070013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5180030017508 + ... + 5180030017511.

It is an arithmetic number, because the mean of its divisors is an integer number (7770045026265).

Almost surely, 2^{20720120070038} is an apocalyptic number.

20720120070038 is a deficient number, since it is larger than the sum of its proper divisors (10360060035022).

20720120070038 is a wasteful number, since it uses less digits than its factorization.

20720120070038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10360060035021.

The product of its (nonzero) digits is 9408, while the sum is 32.

The spelling of 20720120070038 in words is "twenty trillion, seven hundred twenty billion, one hundred twenty million, seventy thousand, thirty-eight".