20144525331 has 16 divisors (see below), whose sum is σ = 30978041600. Its totient is φ = 11405549088.

The previous prime is 20144525281. The next prime is 20144525351. The reversal of 20144525331 is 13352544102.

It is not a de Polignac number, because 20144525331 - 2⁹ = 20144524819 is a prime.

It is a super-2 number, since 2×20144525331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20144525351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4398001 + ... + 4402578.

It is an arithmetic number, because the mean of its divisors is an integer number (1936127600).

Almost surely, 2^20144525331 is an apocalyptic number.

20144525331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20144525331 is a deficient number, since it is larger than the sum of its proper divisors (10833516269).

20144525331 is a wasteful number, since it uses less digits than its factorization.

20144525331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8800698.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 20144525331 in words is "twenty billion, one hundred forty-four million, five hundred twenty-five thousand, three hundred thirty-one".