40657213106 has 8 divisors (see below), whose sum is σ = 60987259884. Its totient is φ = 20328126480.

The previous prime is 40657213097. The next prime is 40657213139. The reversal of 40657213106 is 60131275604.

It can be written as a sum of positive squares in 2 ways, for example, as 33632258881 + 7024954225 = 183391^2 + 83815^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122705 + ... + 310436.

Almost surely, 2^40657213106 is an apocalyptic number.

40657213106 is a deficient number, since it is larger than the sum of its proper divisors (20330046778).

40657213106 is a wasteful number, since it uses less digits than its factorization.

40657213106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480076.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 40657213106 in words is "forty billion, six hundred fifty-seven million, two hundred thirteen thousand, one hundred six".