20235434416 has 20 divisors (see below), whose sum is σ = 41269636600. Its totient is φ = 9585205632.

The previous prime is 20235434411. The next prime is 20235434423. The reversal of 20235434416 is 61443453202.

It is a super-3 number, since 3×20235434416³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (20235434411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33281661 + ... + 33282268.

It is an arithmetic number, because the mean of its divisors is an integer number (2063481830).

Almost surely, 2^20235434416 is an apocalyptic number.

It is an amenable number.

20235434416 is an abundant number, since it is smaller than the sum of its proper divisors (21034202184).

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

20235434416 is a wasteful number, since it uses less digits than its factorization.

20235434416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66563956 (or 66563950 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 20235434416 its reverse (61443453202), we get a palindrome (81678887618).

The spelling of 20235434416 in words is "twenty billion, two hundred thirty-five million, four hundred thirty-four thousand, four hundred sixteen".