20626626433 has 4 divisors (see below), whose sum is σ = 23573287360. Its totient is φ = 17679965508.

The previous prime is 20626626431. The next prime is 20626626451. The reversal of 20626626433 is 33462662602.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20626626433 - 2¹ = 20626626431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20626626431) 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 3 ways as a sum of consecutive naturals, for example, 1473330453 + ... + 1473330466.

It is an arithmetic number, because the mean of its divisors is an integer number (5893321840).

Almost surely, 2^20626626433 is an apocalyptic number.

It is an amenable number.

20626626433 is a deficient number, since it is larger than the sum of its proper divisors (2946660927).

20626626433 is an equidigital number, since it uses as much as digits as its factorization.

20626626433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946660926.

The product of its (nonzero) digits is 373248, while the sum is 40.

The spelling of 20626626433 in words is "twenty billion, six hundred twenty-six million, six hundred twenty-six thousand, four hundred thirty-three".