20477239467 has 4 divisors (see below), whose sum is σ = 27302985960. Its totient is φ = 13651492976.

The previous prime is 20477239463. The next prime is 20477239537. The reversal of 20477239467 is 76493277402.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20477239467 - 2² = 20477239463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20477239463) 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, 3412873242 + ... + 3412873247.

It is an arithmetic number, because the mean of its divisors is an integer number (6825746490).

Almost surely, 2^20477239467 is an apocalyptic number.

20477239467 is a deficient number, since it is larger than the sum of its proper divisors (6825746493).

20477239467 is an equidigital number, since it uses as much as digits as its factorization.

20477239467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6825746492.

The product of its (nonzero) digits is 3556224, while the sum is 51.

The spelling of 20477239467 in words is "twenty billion, four hundred seventy-seven million, two hundred thirty-nine thousand, four hundred sixty-seven".