999413155739041 has 4 divisors (see below), whose sum is σ = 999413228747284. Its totient is φ = 999413082730800.

The previous prime is 999413155739003. The next prime is 999413155739083. The reversal of 999413155739041 is 140937551314999.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 543514433052816 + 455898722686225 = 23313396^2 + 21351785^2 .

It is a 3-Lehmer number, since φ(999413155739041) divides (999413155739041-1)³.

It is a cyclic number.

It is not a de Polignac number, because 999413155739041 - 2⁴³ = 990617062716833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999413155739641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9126030 + ... + 45630151.

It is an arithmetic number, because the mean of its divisors is an integer number (249853307186821).

It is a Poulet number, since it divides 2^{999413155739040}-1.

Almost surely, 2^{999413155739041} is an apocalyptic number.

999413155739041 is the 18252061-st octagonal number.

It is an amenable number.

999413155739041 is a deficient number, since it is larger than the sum of its proper divisors (73008243).

999413155739041 is a wasteful number, since it uses less digits than its factorization.

999413155739041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73008242.

The product of its (nonzero) digits is 165337200, while the sum is 70.

The spelling of 999413155739041 in words is "nine hundred ninety-nine trillion, four hundred thirteen billion, one hundred fifty-five million, seven hundred thirty-nine thousand, forty-one".