40607409618 has 64 divisors (see below), whose sum is σ = 95675696640. Its totient is φ = 12722400000.

The previous prime is 40607409569. The next prime is 40607409631. The reversal of 40607409618 is 81690470604.

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, 659968 + ... + 718868.

It is an arithmetic number, because the mean of its divisors is an integer number (1494932760).

Almost surely, 2^40607409618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40607409618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47837848320).

40607409618 is an abundant number, since it is smaller than the sum of its proper divisors (55068287022).

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

40607409618 is a wasteful number, since it uses less digits than its factorization.

40607409618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59680 (or 59674 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 40607409618 in words is "forty billion, six hundred seven million, four hundred nine thousand, six hundred eighteen".