40958323566 has 64 divisors (see below), whose sum is σ = 85658031360. Its totient is φ = 13043151360.

The previous prime is 40958323517. The next prime is 40958323607. The reversal of 40958323566 is 66532385904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16986901 + ... + 16989311.

It is an arithmetic number, because the mean of its divisors is an integer number (1338406740).

Almost surely, 2^40958323566 is an apocalyptic number.

40958323566 is an abundant number, since it is smaller than the sum of its proper divisors (44699707794).

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

40958323566 is a wasteful number, since it uses less digits than its factorization.

40958323566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3809.

The product of its (nonzero) digits is 4665600, while the sum is 51.

The spelling of 40958323566 in words is "forty billion, nine hundred fifty-eight million, three hundred twenty-three thousand, five hundred sixty-six".