20669055429 has 16 divisors (see below), whose sum is σ = 30075439680. Its totient is φ = 12521967360.

The previous prime is 20669055383. The next prime is 20669055431. The reversal of 20669055429 is 92455096602.

It is not a de Polignac number, because 20669055429 - 2²³ = 20660666821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20669055469) 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 15 ways as a sum of consecutive naturals, for example, 28644 + ... + 205325.

It is an arithmetic number, because the mean of its divisors is an integer number (1879714980).

Almost surely, 2^20669055429 is an apocalyptic number.

It is an amenable number.

20669055429 is a deficient number, since it is larger than the sum of its proper divisors (9406384251).

20669055429 is a wasteful number, since it uses less digits than its factorization.

20669055429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236660.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 20669055429 in words is "twenty billion, six hundred sixty-nine million, fifty-five thousand, four hundred twenty-nine".