20005154242466 has 8 divisors (see below), whose sum is σ = 30007776544284. Its totient is φ = 10002562061040.

The previous prime is 20005154242441. The next prime is 20005154242471. The reversal of 20005154242466 is 66424245150002.

It can be written as a sum of positive squares in 2 ways, for example, as 16698084696241 + 3307069546225 = 4086329^2 + 1818535^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20005154242466² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5789165 + ... + 8574656.

Almost surely, 2^{20005154242466} is an apocalyptic number.

20005154242466 is a deficient number, since it is larger than the sum of its proper divisors (10002622301818).

20005154242466 is a wasteful number, since it uses less digits than its factorization.

20005154242466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15060196.

The product of its (nonzero) digits is 460800, while the sum is 41.

Adding to 20005154242466 its reverse (66424245150002), we get a palindrome (86429399392468).

The spelling of 20005154242466 in words is "twenty trillion, five billion, one hundred fifty-four million, two hundred forty-two thousand, four hundred sixty-six".