40634433121 has 8 divisors (see below), whose sum is σ = 42037894080. Its totient is φ = 39231123792.

The previous prime is 40634433041. The next prime is 40634433137. The reversal of 40634433121 is 12133443604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40634433121 - 2³⁵ = 6274694753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40634433181) 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, 906196 + ... + 949978.

It is an arithmetic number, because the mean of its divisors is an integer number (5254736760).

Almost surely, 2^40634433121 is an apocalyptic number.

It is an amenable number.

40634433121 is a deficient number, since it is larger than the sum of its proper divisors (1403460959).

40634433121 is a wasteful number, since it uses less digits than its factorization.

40634433121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75815.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 40634433121 its reverse (12133443604), we get a palindrome (52767876725).

The spelling of 40634433121 in words is "forty billion, six hundred thirty-four million, four hundred thirty-three thousand, one hundred twenty-one".