40445212120 has 16 divisors (see below), whose sum is σ = 91001727360. Its totient is φ = 16178084832.

The previous prime is 40445212097. The next prime is 40445212127. The reversal of 40445212120 is 2121254404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40445212127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505565112 + ... + 505565191.

It is an arithmetic number, because the mean of its divisors is an integer number (5687607960).

Almost surely, 2^40445212120 is an apocalyptic number.

40445212120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40445212120 is an abundant number, since it is smaller than the sum of its proper divisors (50556515240).

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

40445212120 is a wasteful number, since it uses less digits than its factorization.

40445212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011130314 (or 1011130310 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 40445212120 its reverse (2121254404), we get a palindrome (42566466524).

The spelling of 40445212120 in words is "forty billion, four hundred forty-five million, two hundred twelve thousand, one hundred twenty".