20043153544 has 32 divisors (see below), whose sum is σ = 40163467680. Its totient is φ = 9343915264.

The previous prime is 20043153517. The next prime is 20043153569. The reversal of 20043153544 is 44535134002.

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, 674122 + ... + 703225.

It is an arithmetic number, because the mean of its divisors is an integer number (1255108365).

Almost surely, 2^20043153544 is an apocalyptic number.

It is an amenable number.

20043153544 is an abundant number, since it is smaller than the sum of its proper divisors (20120314136).

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

20043153544 is a wasteful number, since it uses less digits than its factorization.

20043153544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377477 (or 1377473 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 20043153544 its reverse (44535134002), we get a palindrome (64578287546).

The spelling of 20043153544 in words is "twenty billion, forty-three million, one hundred fifty-three thousand, five hundred forty-four".