40621759618 has 16 divisors (see below), whose sum is σ = 66581501184. Its totient is φ = 18434010960.

The previous prime is 40621759609. The next prime is 40621759621. The reversal of 40621759618 is 81695712604.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 1507605 + ... + 1534312.

It is an arithmetic number, because the mean of its divisors is an integer number (4161343824).

Almost surely, 2^40621759618 is an apocalyptic number.

40621759618 is a deficient number, since it is larger than the sum of its proper divisors (25959741566).

40621759618 is a wasteful number, since it uses less digits than its factorization.

40621759618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042537.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 40621759618 in words is "forty billion, six hundred twenty-one million, seven hundred fifty-nine thousand, six hundred eighteen".