20441531145 has 48 divisors (see below), whose sum is σ = 38065420800. Its totient is φ = 9339998976.

The previous prime is 20441531137. The next prime is 20441531183. The reversal of 20441531145 is 54113514402.

It is not a de Polignac number, because 20441531145 - 2³ = 20441531137 is a prime.

It is a super-2 number, since 2×20441531145² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1757469 + ... + 1769061.

It is an arithmetic number, because the mean of its divisors is an integer number (793029600).

Almost surely, 2^20441531145 is an apocalyptic number.

It is an amenable number.

20441531145 is a deficient number, since it is larger than the sum of its proper divisors (17623889655).

20441531145 is a wasteful number, since it uses less digits than its factorization.

20441531145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14014 (or 14007 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 20441531145 in words is "twenty billion, four hundred forty-one million, five hundred thirty-one thousand, one hundred forty-five".