40620661129 has 8 divisors (see below), whose sum is σ = 41156216640. Its totient is φ = 40087993296.

The previous prime is 40620661121. The next prime is 40620661181. The reversal of 40620661129 is 92116602604.

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 40620661129 - 2³ = 40620661121 is a prime.

It is a super-2 number, since 2×40620661129² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40620661121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693594 + ... + 749875.

It is an arithmetic number, because the mean of its divisors is an integer number (5144527080).

Almost surely, 2^40620661129 is an apocalyptic number.

It is an amenable number.

40620661129 is a deficient number, since it is larger than the sum of its proper divisors (535555511).

40620661129 is a wasteful number, since it uses less digits than its factorization.

40620661129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443839.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 40620661129 in words is "forty billion, six hundred twenty million, six hundred sixty-one thousand, one hundred twenty-nine".