20486709516 has 96 divisors (see below), whose sum is σ = 58867863040. Its totient is φ = 5399944704.

The previous prime is 20486709493. The next prime is 20486709533. The reversal of 20486709516 is 61590768402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2329215 + ... + 2337993.

Almost surely, 2^20486709516 is an apocalyptic number.

20486709516 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20486709516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29433931520).

20486709516 is an abundant number, since it is smaller than the sum of its proper divisors (38381153524).

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

20486709516 is a wasteful number, since it uses less digits than its factorization.

20486709516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10943 (or 10941 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 20486709516 in words is "twenty billion, four hundred eighty-six million, seven hundred nine thousand, five hundred sixteen".