999140540719 has 4 divisors (see below), whose sum is σ = 1020398850144. Its totient is φ = 977882231296.

The previous prime is 999140540641. The next prime is 999140540759. The reversal of 999140540719 is 917045041999.

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 999140540719 - 2⁷ = 999140540591 is a prime.

It is a super-2 number, since 2×999140540719² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999140540759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10629154642 + ... + 10629154735.

It is an arithmetic number, because the mean of its divisors is an integer number (255099712536).

Almost surely, 2^999140540719 is an apocalyptic number.

999140540719 is a deficient number, since it is larger than the sum of its proper divisors (21258309425).

999140540719 is a wasteful number, since it uses less digits than its factorization.

999140540719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21258309424.

The product of its (nonzero) digits is 3674160, while the sum is 58.

The spelling of 999140540719 in words is "nine hundred ninety-nine billion, one hundred forty million, five hundred forty thousand, seven hundred nineteen".