20860485013 has 8 divisors (see below), whose sum is σ = 20935572632. Its totient is φ = 20785476096.

The previous prime is 20860485011. The next prime is 20860485047. The reversal of 20860485013 is 31058406802.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25583364 + 20834901649 = 5058^2 + 144343^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20860485013 - 2¹ = 20860485011 is a prime.

It is a super-2 number, since 2×20860485013² (a number of 21 digits) contains 22 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 (20860485011) 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, 539731 + ... + 577087.

It is an arithmetic number, because the mean of its divisors is an integer number (2616946579).

Almost surely, 2^20860485013 is an apocalyptic number.

It is an amenable number.

20860485013 is a deficient number, since it is larger than the sum of its proper divisors (75087619).

20860485013 is a wasteful number, since it uses less digits than its factorization.

20860485013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39351.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 20860485013 in words is "twenty billion, eight hundred sixty million, four hundred eighty-five thousand, thirteen".