20566012151 has 8 divisors (see below), whose sum is σ = 20631756240. Its totient is φ = 20500368448.

The previous prime is 20566012141. The next prime is 20566012171. The reversal of 20566012151 is 15121066502.

It is a happy number.

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 20566012151 - 2³⁰ = 19492270327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20566012111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396515 + ... + 445371.

It is an arithmetic number, because the mean of its divisors is an integer number (2578969530).

Almost surely, 2^20566012151 is an apocalyptic number.

20566012151 is a deficient number, since it is larger than the sum of its proper divisors (65744089).

20566012151 is an equidigital number, since it uses as much as digits as its factorization.

20566012151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50193.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 20566012151 its reverse (15121066502), we get a palindrome (35687078653).

The spelling of 20566012151 in words is "twenty billion, five hundred sixty-six million, twelve thousand, one hundred fifty-one".