20660154513 has 8 divisors (see below), whose sum is σ = 27633772608. Its totient is φ = 13729986384.

The previous prime is 20660154481. The next prime is 20660154517. The reversal of 20660154513 is 31545106602.

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

It is not a de Polignac number, because 20660154513 - 2⁵ = 20660154481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20660154517) 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 7 ways as a sum of consecutive naturals, for example, 10861381 + ... + 10863282.

It is an arithmetic number, because the mean of its divisors is an integer number (3454221576).

Almost surely, 2^20660154513 is an apocalyptic number.

It is an amenable number.

20660154513 is a deficient number, since it is larger than the sum of its proper divisors (6973618095).

20660154513 is a wasteful number, since it uses less digits than its factorization.

20660154513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21724983.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 20660154513 in words is "twenty billion, six hundred sixty million, one hundred fifty-four thousand, five hundred thirteen".