40623931279 has 4 divisors (see below), whose sum is σ = 40629744184. Its totient is φ = 40618118376.

The previous prime is 40623931277. The next prime is 40623931319. The reversal of 40623931279 is 97213932604.

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 40623931279 - 2¹ = 40623931277 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 (40623931277) 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, 2895957 + ... + 2909950.

It is an arithmetic number, because the mean of its divisors is an integer number (10157436046).

Almost surely, 2^40623931279 is an apocalyptic number.

40623931279 is a deficient number, since it is larger than the sum of its proper divisors (5812905).

40623931279 is an equidigital number, since it uses as much as digits as its factorization.

40623931279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5812904.

The product of its (nonzero) digits is 489888, while the sum is 46.

The spelling of 40623931279 in words is "forty billion, six hundred twenty-three million, nine hundred thirty-one thousand, two hundred seventy-nine".