40655071879 has 4 divisors (see below), whose sum is σ = 41646659040. Its totient is φ = 39663484720.

The previous prime is 40655071867. The next prime is 40655071909. The reversal of 40655071879 is 97817055604.

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 40655071879 - 2⁹ = 40655071367 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 (40655071829) 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, 495793519 + ... + 495793600.

It is an arithmetic number, because the mean of its divisors is an integer number (10411664760).

Almost surely, 2^40655071879 is an apocalyptic number.

40655071879 is a deficient number, since it is larger than the sum of its proper divisors (991587161).

40655071879 is an equidigital number, since it uses as much as digits as its factorization.

40655071879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991587160.

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 40655071879 in words is "forty billion, six hundred fifty-five million, seventy-one thousand, eight hundred seventy-nine".