40674805661 has 4 divisors (see below), whose sum is σ = 46485492192. Its totient is φ = 34864119132.

The previous prime is 40674805657. The next prime is 40674805663. The reversal of 40674805661 is 16650847604.

40674805661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40674805661 - 2² = 40674805657 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 (40674805663) 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, 2905343255 + ... + 2905343268.

It is an arithmetic number, because the mean of its divisors is an integer number (11621373048).

Almost surely, 2^40674805661 is an apocalyptic number.

It is an amenable number.

40674805661 is a deficient number, since it is larger than the sum of its proper divisors (5810686531).

40674805661 is an equidigital number, since it uses as much as digits as its factorization.

40674805661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5810686530.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 40674805661 in words is "forty billion, six hundred seventy-four million, eight hundred five thousand, six hundred sixty-one".