40442864618 has 16 divisors (see below), whose sum is σ = 68769244320. Its totient is φ = 17683519536.

The previous prime is 40442864597. The next prime is 40442864659. The reversal of 40442864618 is 81646824404.

40442864618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40933580 + ... + 40934567.

It is an arithmetic number, because the mean of its divisors is an integer number (4298077770).

Almost surely, 2^40442864618 is an apocalyptic number.

40442864618 is a deficient number, since it is larger than the sum of its proper divisors (28326379702).

40442864618 is a wasteful number, since it uses less digits than its factorization.

40442864618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81868181.

The product of its (nonzero) digits is 1179648, while the sum is 47.

The spelling of 40442864618 in words is "forty billion, four hundred forty-two million, eight hundred sixty-four thousand, six hundred eighteen".