20344135345212 has 96 divisors (see below), whose sum is σ = 57571932805632. Its totient is φ = 5458342496256.

The previous prime is 20344135345201. The next prime is 20344135345273. The reversal of 20344135345212 is 21254353144302.

It is a happy number.

It is a super-2 number, since 2×20344135345212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15447073 + ... + 16712280.

It is an arithmetic number, because the mean of its divisors is an integer number (599707633392).

Almost surely, 2^{20344135345212} is an apocalyptic number.

It is an amenable number.

20344135345212 is an abundant number, since it is smaller than the sum of its proper divisors (37227797460420).

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

20344135345212 is a wasteful number, since it uses less digits than its factorization.

20344135345212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32159827 (or 32159825 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 20344135345212 its reverse (21254353144302), we get a palindrome (41598488489514).

The spelling of 20344135345212 in words is "twenty trillion, three hundred forty-four billion, one hundred thirty-five million, three hundred forty-five thousand, two hundred twelve".