20351644253354 has 16 divisors (see below), whose sum is σ = 31512420715776. Its totient is φ = 9847508126400.

The previous prime is 20351644253327. The next prime is 20351644253371. The reversal of 20351644253354 is 45335244615302.

It is a junction number, because it is equal to n+sod(n) for n = 20351644253299 and 20351644253308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9877169 + ... + 11758475.

It is an arithmetic number, because the mean of its divisors is an integer number (1969526294736).

Almost surely, 2^{20351644253354} is an apocalyptic number.

20351644253354 is a deficient number, since it is larger than the sum of its proper divisors (11160776462422).

20351644253354 is a wasteful number, since it uses less digits than its factorization.

20351644253354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055821.

The product of its (nonzero) digits is 5184000, while the sum is 47.

Adding to 20351644253354 its reverse (45335244615302), we get a palindrome (65686888868656).

The spelling of 20351644253354 in words is "twenty trillion, three hundred fifty-one billion, six hundred forty-four million, two hundred fifty-three thousand, three hundred fifty-four".