20705006516 has 48 divisors (see below), whose sum is σ = 38010846720. Its totient is φ = 9856028160.

The previous prime is 20705006513. The next prime is 20705006551. The reversal of 20705006516 is 61560050702.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20705006513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9910400 + ... + 9912488.

It is an arithmetic number, because the mean of its divisors is an integer number (791892640).

Almost surely, 2^20705006516 is an apocalyptic number.

It is an amenable number.

20705006516 is a deficient number, since it is larger than the sum of its proper divisors (17305840204).

20705006516 is a wasteful number, since it uses less digits than its factorization.

20705006516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384 (or 3382 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The spelling of 20705006516 in words is "twenty billion, seven hundred five million, six thousand, five hundred sixteen".