40346365661 has 4 divisors (see below), whose sum is σ = 46110132192. Its totient is φ = 34582599132.

The previous prime is 40346365649. The next prime is 40346365669. The reversal of 40346365661 is 16656364304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40346365661 - 2³⁴ = 23166496477 is a prime.

It is a super-2 number, since 2×40346365661² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40346365669) 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, 2881883255 + ... + 2881883268.

It is an arithmetic number, because the mean of its divisors is an integer number (11527533048).

Almost surely, 2^40346365661 is an apocalyptic number.

It is an amenable number.

40346365661 is a deficient number, since it is larger than the sum of its proper divisors (5763766531).

40346365661 is an equidigital number, since it uses as much as digits as its factorization.

40346365661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5763766530.

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 40346365661 in words is "forty billion, three hundred forty-six million, three hundred sixty-five thousand, six hundred sixty-one".