20669061413 has 16 divisors (see below), whose sum is σ = 27751468416. Its totient is φ = 14866856640.

The previous prime is 20669061373. The next prime is 20669061503. The reversal of 20669061413 is 31416096602.

It is a cyclic number.

It is not a de Polignac number, because 20669061413 - 2¹⁶ = 20668995877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20669061713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10323206 + ... + 10325207.

It is an arithmetic number, because the mean of its divisors is an integer number (1734466776).

Almost surely, 2^20669061413 is an apocalyptic number.

It is an amenable number.

20669061413 is a deficient number, since it is larger than the sum of its proper divisors (7082407003).

20669061413 is a wasteful number, since it uses less digits than its factorization.

20669061413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20648444.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 20669061413 in words is "twenty billion, six hundred sixty-nine million, sixty-one thousand, four hundred thirteen".