40667406667 has 4 divisors (see below), whose sum is σ = 40713568056. Its totient is φ = 40621245280.

The previous prime is 40667406653. The next prime is 40667406671. The reversal of 40667406667 is 76660476604.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40667406667 - 2¹⁹ = 40666882379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40667406677) 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, 23079373 + ... + 23081134.

It is an arithmetic number, because the mean of its divisors is an integer number (10178392014).

Almost surely, 2^40667406667 is an apocalyptic number.

40667406667 is a deficient number, since it is larger than the sum of its proper divisors (46161389).

40667406667 is an equidigital number, since it uses as much as digits as its factorization.

40667406667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46161388.

The product of its (nonzero) digits is 6096384, while the sum is 52.

The spelling of 40667406667 in words is "forty billion, six hundred sixty-seven million, four hundred six thousand, six hundred sixty-seven".