20476429441 has 4 divisors (see below), whose sum is σ = 22051539412. Its totient is φ = 18901319472.

The previous prime is 20476429429. The next prime is 20476429451. The reversal of 20476429441 is 14492467402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13674963600 + 6801465841 = 116940^2 + 82471^2 .

It is a cyclic number.

It is not a de Polignac number, because 20476429441 - 2⁷ = 20476429313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20476429451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787554966 + ... + 787554991.

It is an arithmetic number, because the mean of its divisors is an integer number (5512884853).

Almost surely, 2^20476429441 is an apocalyptic number.

It is an amenable number.

20476429441 is a deficient number, since it is larger than the sum of its proper divisors (1575109971).

20476429441 is a wasteful number, since it uses less digits than its factorization.

20476429441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575109970.

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 20476429441 in words is "twenty billion, four hundred seventy-six million, four hundred twenty-nine thousand, four hundred forty-one".