40190748644 has 12 divisors (see below), whose sum is σ = 70340409468. Its totient is φ = 20093488800.

The previous prime is 40190748641. The next prime is 40190748667. The reversal of 40190748644 is 44684709104.

It can be written as a sum of positive squares in 2 ways, for example, as 20552089600 + 19638659044 = 143360^2 + 140138^2 .

It is not an unprimeable number, because it can be changed into a prime (40190748641) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 422867 + ... + 509114.

It is an arithmetic number, because the mean of its divisors is an integer number (5861700789).

Almost surely, 2^40190748644 is an apocalyptic number.

It is an amenable number.

40190748644 is a deficient number, since it is larger than the sum of its proper divisors (30149660824).

40190748644 is a wasteful number, since it uses less digits than its factorization.

40190748644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942766 (or 942764 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 40190748644 in words is "forty billion, one hundred ninety million, seven hundred forty-eight thousand, six hundred forty-four".