40035665316061 has 4 divisors (see below), whose sum is σ = 40035743673372. Its totient is φ = 40035586958752.

The previous prime is 40035665316007. The next prime is 40035665316079. The reversal of 40035665316061 is 16061356653004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3943326179961 + 36092339136100 = 1985781^2 + 6007690^2 .

It is a cyclic number.

It is not a de Polignac number, because 40035665316061 - 2²⁷ = 40035531098333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40038665316061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38407186 + ... + 39435811.

It is an arithmetic number, because the mean of its divisors is an integer number (10008935918343).

Almost surely, 2^{40035665316061} is an apocalyptic number.

It is an amenable number.

40035665316061 is a deficient number, since it is larger than the sum of its proper divisors (78357311).

40035665316061 is an equidigital number, since it uses as much as digits as its factorization.

40035665316061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78357310.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 40035665316061 in words is "forty trillion, thirty-five billion, six hundred sixty-five million, three hundred sixteen thousand, sixty-one".