40243618155579 has 8 divisors (see below), whose sum is σ = 53663156946192. Its totient is φ = 26826579067680.

The previous prime is 40243618155541. The next prime is 40243618155581. The reversal of 40243618155579 is 97555181634204.

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

It is not a de Polignac number, because 40243618155579 - 2²⁵ = 40243584601147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40243618155589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624888112 + ... + 624952509.

It is an arithmetic number, because the mean of its divisors is an integer number (6707894618274).

It is a 1-persistent number, because it is pandigital, but 2⋅40243618155579 = 80487236311158 is not.

Almost surely, 2^{40243618155579} is an apocalyptic number.

40243618155579 is a deficient number, since it is larger than the sum of its proper divisors (13419538790613).

40243618155579 is a wasteful number, since it uses less digits than its factorization.

40243618155579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249851357.

The product of its (nonzero) digits is 36288000, while the sum is 60.

The spelling of 40243618155579 in words is "forty trillion, two hundred forty-three billion, six hundred eighteen million, one hundred fifty-five thousand, five hundred seventy-nine".