40040220432 has 40 divisors (see below), whose sum is σ = 103537497184. Its totient is φ = 13333803264.

The previous prime is 40040220397. The next prime is 40040220439. The reversal of 40040220432 is 23402204004.

It is a junction number, because it is equal to n+sod(n) for n = 40040220399 and 40040220408.

It is not an unprimeable number, because it can be changed into a prime (40040220439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354178 + ... + 453345.

Almost surely, 2^40040220432 is an apocalyptic number.

It is an amenable number.

40040220432 is an abundant number, since it is smaller than the sum of its proper divisors (63497276752).

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

40040220432 is a wasteful number, since it uses less digits than its factorization.

40040220432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808567 (or 808561 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 40040220432 its reverse (23402204004), we get a palindrome (63442424436).

The spelling of 40040220432 in words is "forty billion, forty million, two hundred twenty thousand, four hundred thirty-two".