40137235407865 has 8 divisors (see below), whose sum is σ = 48171002530248. Its totient is φ = 32105574965760.

The previous prime is 40137235407779. The next prime is 40137235407877. The reversal of 40137235407865 is 56870453273104.

It can be written as a sum of positive squares in 4 ways, for example, as 3861995318416 + 36275240089449 = 1965196^2 + 6022893^2 .

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

It is not a de Polignac number, because 40137235407865 - 2²³ = 40137227019257 is a prime.

It is a super-2 number, since 2×40137235407865² (a number of 28 digits) contains 22 as substring.

It is a Duffinian 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, 526628152 + ... + 526704361.

It is an arithmetic number, because the mean of its divisors is an integer number (6021375316281).

Almost surely, 2^{40137235407865} is an apocalyptic number.

It is an amenable number.

40137235407865 is a deficient number, since it is larger than the sum of its proper divisors (8033767122383).

40137235407865 is a wasteful number, since it uses less digits than its factorization.

40137235407865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053340139.

The product of its (nonzero) digits is 16934400, while the sum is 55.

The spelling of 40137235407865 in words is "forty trillion, one hundred thirty-seven billion, two hundred thirty-five million, four hundred seven thousand, eight hundred sixty-five".