20654146426 has 4 divisors (see below), whose sum is σ = 30981219642. Its totient is φ = 10327073212.

The previous prime is 20654146423. The next prime is 20654146439. The reversal of 20654146426 is 62464145602.

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 only one way, i.e., 14468481225 + 6185665201 = 120285^2 + 78649^2 .

It is not an unprimeable number, because it can be changed into a prime (20654146421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5163536605 + ... + 5163536608.

Almost surely, 2^20654146426 is an apocalyptic number.

20654146426 is a deficient number, since it is larger than the sum of its proper divisors (10327073216).

20654146426 is a wasteful number, since it uses less digits than its factorization.

20654146426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10327073215.

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 20654146426 in words is "twenty billion, six hundred fifty-four million, one hundred forty-six thousand, four hundred twenty-six".