40445031420 has 36 divisors (see below), whose sum is σ = 122683262520. Its totient is φ = 10785341664.

The previous prime is 40445031383. The next prime is 40445031463. The reversal of 40445031420 is 2413054404.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112347130 + ... + 112347489.

Almost surely, 2^40445031420 is an apocalyptic number.

It is an amenable number.

40445031420 is an abundant number, since it is smaller than the sum of its proper divisors (82238231100).

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

40445031420 is a wasteful number, since it uses less digits than its factorization.

40445031420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224694634 (or 224694629 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 40445031420 its reverse (2413054404), we get a palindrome (42858085824).

The spelling of 40445031420 in words is "forty billion, four hundred forty-five million, thirty-one thousand, four hundred twenty".