20454524144 has 40 divisors (see below), whose sum is σ = 40911308592. Its totient is φ = 9900979200.

The previous prime is 20454524143. The next prime is 20454524147. The reversal of 20454524144 is 44142545402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20454524143) 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, 53807 + ... + 209294.

Almost surely, 2^20454524144 is an apocalyptic number.

It is an amenable number.

20454524144 is an abundant number, since it is smaller than the sum of its proper divisors (20456784448).

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

20454524144 is a wasteful number, since it uses less digits than its factorization.

20454524144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263265 (or 263259 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 35.

The spelling of 20454524144 in words is "twenty billion, four hundred fifty-four million, five hundred twenty-four thousand, one hundred forty-four".