20453112144 has 40 divisors (see below), whose sum is σ = 58708008320. Its totient is φ = 6817703904.

The previous prime is 20453112139. The next prime is 20453112223. The reversal of 20453112144 is 44121135402.

20453112144 is a `hidden beast` number, since 2 + 0 + 4 + 531 + 121 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 23672152 + ... + 23673015.

It is an arithmetic number, because the mean of its divisors is an integer number (1467700208).

Almost surely, 2^20453112144 is an apocalyptic number.

20453112144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20453112144 is an abundant number, since it is smaller than the sum of its proper divisors (38254896176).

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

20453112144 is a wasteful number, since it uses less digits than its factorization.

20453112144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47345184 (or 47345172 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 20453112144 its reverse (44121135402), we get a palindrome (64574247546).

The spelling of 20453112144 in words is "twenty billion, four hundred fifty-three million, one hundred twelve thousand, one hundred forty-four".