40634433140 has 24 divisors (see below), whose sum is σ = 97522639872. Its totient is φ = 13931805600.

The previous prime is 40634433139. The next prime is 40634433149. The reversal of 40634433140 is 4133443604.

It is a junction number, because it is equal to n+sod(n) for n = 40634433097 and 40634433106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40634433149) 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, 145122836 + ... + 145123115.

It is an arithmetic number, because the mean of its divisors is an integer number (4063443328).

Almost surely, 2^40634433140 is an apocalyptic number.

It is an amenable number.

40634433140 is an abundant number, since it is smaller than the sum of its proper divisors (56888206732).

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

40634433140 is a wasteful number, since it uses less digits than its factorization.

40634433140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290245967 (or 290245965 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 40634433140 its reverse (4133443604), we get a palindrome (44767876744).

The spelling of 40634433140 in words is "forty billion, six hundred thirty-four million, four hundred thirty-three thousand, one hundred forty".