40426516645 has 8 divisors (see below), whose sum is σ = 49427137656. Its totient is φ = 31731001536.

The previous prime is 40426516639. The next prime is 40426516667. The reversal of 40426516645 is 54661562404.

40426516645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3347548164 + 37078968481 = 57858^2 + 192559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40426516645 - 2⁹ = 40426516133 is a prime.

It is a Duffinian number.

It is a congruent 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, 76276182 + ... + 76276711.

It is an arithmetic number, because the mean of its divisors is an integer number (6178392207).

Almost surely, 2^40426516645 is an apocalyptic number.

It is an amenable number.

40426516645 is a deficient number, since it is larger than the sum of its proper divisors (9000621011).

40426516645 is a wasteful number, since it uses less digits than its factorization.

40426516645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152552951.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 40426516645 in words is "forty billion, four hundred twenty-six million, five hundred sixteen thousand, six hundred forty-five".