20344010420146 has 16 divisors (see below), whose sum is σ = 36710996247360. Its totient is φ = 8259974155440.

The previous prime is 20344010420101. The next prime is 20344010420147. The reversal of 20344010420146 is 64102401044302.

It is a super-2 number, since 2×20344010420146² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20344010420147) 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, 38240620825 + ... + 38240621356.

It is an arithmetic number, because the mean of its divisors is an integer number (2294437265460).

Almost surely, 2^{20344010420146} is an apocalyptic number.

20344010420146 is a deficient number, since it is larger than the sum of its proper divisors (16366985827214).

20344010420146 is a wasteful number, since it uses less digits than its factorization.

20344010420146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76481242209.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 20344010420146 its reverse (64102401044302), we get a palindrome (84446411464448).

The spelling of 20344010420146 in words is "twenty trillion, three hundred forty-four billion, ten million, four hundred twenty thousand, one hundred forty-six".