20434255120 has 40 divisors (see below), whose sum is σ = 49042218240. Its totient is φ = 7910033280.

The previous prime is 20434255111. The next prime is 20434255141. The reversal of 20434255120 is 2155243402.

It is a tau number, because it is divible by the number of its divisors (40).

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, 4117330 + ... + 4122289.

It is an arithmetic number, because the mean of its divisors is an integer number (1226055456).

Almost surely, 2^20434255120 is an apocalyptic number.

20434255120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20434255120 is an abundant number, since it is smaller than the sum of its proper divisors (28607963120).

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

20434255120 is a wasteful number, since it uses less digits than its factorization.

20434255120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8239663 (or 8239657 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 20434255120 its reverse (2155243402), we get a palindrome (22589498522).

The spelling of 20434255120 in words is "twenty billion, four hundred thirty-four million, two hundred fifty-five thousand, one hundred twenty".