20452451531120 has 40 divisors (see below), whose sum is σ = 54345085498464. Its totient is φ = 7012269096192.

The previous prime is 20452451531089. The next prime is 20452451531129. The reversal of 20452451531120 is 2113515425402.

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

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20452451531129) 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, 18261116879 + ... + 18261117998.

Almost surely, 2^{20452451531120} is an apocalyptic number.

20452451531120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20452451531120 is an abundant number, since it is smaller than the sum of its proper divisors (33892633967344).

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

20452451531120 is a wasteful number, since it uses less digits than its factorization.

20452451531120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36522234897 (or 36522234891 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 20452451531120 its reverse (2113515425402), we get a palindrome (22565966956522).

The spelling of 20452451531120 in words is "twenty trillion, four hundred fifty-two billion, four hundred fifty-one million, five hundred thirty-one thousand, one hundred twenty".