40005178490879 has 8 divisors (see below), whose sum is σ = 45724681615488. Its totient is φ = 34286794772760.

The previous prime is 40005178490869. The next prime is 40005178490897. The reversal of 40005178490879 is 97809487150004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40005178490879 - 2¹² = 40005178486783 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 (40005178490869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279775037 + ... + 279917990.

It is an arithmetic number, because the mean of its divisors is an integer number (5715585201936).

Almost surely, 2^{40005178490879} is an apocalyptic number.

40005178490879 is a deficient number, since it is larger than the sum of its proper divisors (5719503124609).

40005178490879 is a wasteful number, since it uses less digits than its factorization.

40005178490879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559703245.

The product of its (nonzero) digits is 20321280, while the sum is 62.

The spelling of 40005178490879 in words is "forty trillion, five billion, one hundred seventy-eight million, four hundred ninety thousand, eight hundred seventy-nine".