40155268609 has 8 divisors (see below), whose sum is σ = 40291195112. Its totient is φ = 40019391360.

The previous prime is 40155268579. The next prime is 40155268613. The reversal of 40155268609 is 90686255104.

It can be written as a sum of positive squares in 4 ways, for example, as 23961025 + 40131307584 = 4895^2 + 200328^2 .

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 40155268609 - 2¹³ = 40155260417 is a prime.

It is a super-2 number, since 2×40155268609² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40155268649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2414647 + ... + 2431219.

It is an arithmetic number, because the mean of its divisors is an integer number (5036399389).

Almost surely, 2^40155268609 is an apocalyptic number.

It is an amenable number.

40155268609 is a deficient number, since it is larger than the sum of its proper divisors (135926503).

40155268609 is a wasteful number, since it uses less digits than its factorization.

40155268609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24627.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 40155268609 in words is "forty billion, one hundred fifty-five million, two hundred sixty-eight thousand, six hundred nine".