20532450144 has 24 divisors (see below), whose sum is σ = 53897681880. Its totient is φ = 6844150016.

The previous prime is 20532450139. The next prime is 20532450151. The reversal of 20532450144 is 44105423502.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106939749 + ... + 106939940.

It is an arithmetic number, because the mean of its divisors is an integer number (2245736745).

Almost surely, 2^20532450144 is an apocalyptic number.

20532450144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20532450144 is an abundant number, since it is smaller than the sum of its proper divisors (33365231736).

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

20532450144 is a wasteful number, since it uses less digits than its factorization.

20532450144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213879702 (or 213879694 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 20532450144 its reverse (44105423502), we get a palindrome (64637873646).

The spelling of 20532450144 in words is "twenty billion, five hundred thirty-two million, four hundred fifty thousand, one hundred forty-four".