40009665099 has 8 divisors (see below), whose sum is σ = 53354013840. Its totient is φ = 26669213216.

The previous prime is 40009665083. The next prime is 40009665107. The reversal of 40009665099 is 99056690004.

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 40009665099 - 2⁴ = 40009665083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40009665799) 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, 950172 + ... + 991385.

It is an arithmetic number, because the mean of its divisors is an integer number (6669251730).

Almost surely, 2^40009665099 is an apocalyptic number.

40009665099 is a deficient number, since it is larger than the sum of its proper divisors (13344348741).

40009665099 is a wasteful number, since it uses less digits than its factorization.

40009665099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948429.

The product of its (nonzero) digits is 524880, while the sum is 48.

The spelling of 40009665099 in words is "forty billion, nine million, six hundred sixty-five thousand, ninety-nine".