20870263061 has 8 divisors (see below), whose sum is σ = 22119010200. Its totient is φ = 19623858688.

The previous prime is 20870263019. The next prime is 20870263067. The reversal of 20870263061 is 16036207802.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15093351025 + 5776912036 = 122855^2 + 76006^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20870263061 is a prime.

It is a super-3 number, since 3×20870263061³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20870263067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567326 + ... + 602991.

It is an arithmetic number, because the mean of its divisors is an integer number (2764876275).

Almost surely, 2^20870263061 is an apocalyptic number.

It is an amenable number.

20870263061 is a deficient number, since it is larger than the sum of its proper divisors (1248747139).

20870263061 is a wasteful number, since it uses less digits than its factorization.

20870263061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171383.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 20870263061 in words is "twenty billion, eight hundred seventy million, two hundred sixty-three thousand, sixty-one".