20454330426 has 16 divisors (see below), whose sum is σ = 40911218400. Its totient is φ = 6817683888.

The previous prime is 20454330409. The next prime is 20454330427. The reversal of 20454330426 is 62403345402.

It is not an unprimeable number, because it can be changed into a prime (20454330427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6660 + ... + 202368.

It is an arithmetic number, because the mean of its divisors is an integer number (2556951150).

Almost surely, 2^20454330426 is an apocalyptic number.

20454330426 is an abundant number, since it is smaller than the sum of its proper divisors (20456887974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20454330426 is a wasteful number, since it uses less digits than its factorization.

20454330426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213133.

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 20454330426 its reverse (62403345402), we get a palindrome (82857675828).

The spelling of 20454330426 in words is "twenty billion, four hundred fifty-four million, three hundred thirty thousand, four hundred twenty-six".