40508666434 has 8 divisors (see below), whose sum is σ = 60767217468. Its totient is φ = 20252927280.

The previous prime is 40508666431. The next prime is 40508666483. The reversal of 40508666434 is 43466680504.

It can be written as a sum of positive squares in 2 ways, for example, as 38297315809 + 2211350625 = 195697^2 + 47025^2 .

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

It is a super-2 number, since 2×40508666434² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40508666431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666577 + ... + 724804.

Almost surely, 2^40508666434 is an apocalyptic number.

40508666434 is a deficient number, since it is larger than the sum of its proper divisors (20258551034).

40508666434 is a wasteful number, since it uses less digits than its factorization.

40508666434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405940.

The product of its (nonzero) digits is 1658880, while the sum is 46.

The spelling of 40508666434 in words is "forty billion, five hundred eight million, six hundred sixty-six thousand, four hundred thirty-four".