40309021665979 has 8 divisors (see below), whose sum is σ = 43973547953472. Its totient is φ = 36644507007240.

The previous prime is 40309021665961. The next prime is 40309021665989. The reversal of 40309021665979 is 97956612090304.

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

It is not a de Polignac number, because 40309021665979 - 2¹¹ = 40309021663931 is a prime.

It is a super-3 number, since 3×40309021665979³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40309021665989) 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, 5363652 + ... + 10458814.

It is an arithmetic number, because the mean of its divisors is an integer number (5496693494184).

Almost surely, 2^{40309021665979} is an apocalyptic number.

40309021665979 is a deficient number, since it is larger than the sum of its proper divisors (3664526287493).

40309021665979 is a wasteful number, since it uses less digits than its factorization.

40309021665979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5814377.

The product of its (nonzero) digits is 22044960, while the sum is 61.

The spelling of 40309021665979 in words is "forty trillion, three hundred nine billion, twenty-one million, six hundred sixty-five thousand, nine hundred seventy-nine".