999788053140337 has 4 divisors (see below), whose sum is σ = 999788132188900. Its totient is φ = 999787974091776.

The previous prime is 999788053140281. The next prime is 999788053140343. The reversal of 999788053140337 is 733041350887999.

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 238412251884816 + 761375801255521 = 15440604^2 + 27593039^2 .

It is a 3-Lehmer number, since φ(999788053140337) divides (999788053140337-1)³.

It is a cyclic number.

It is not a de Polignac number, because 999788053140337 - 2²³ = 999788044751729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999788053140347) 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, 15809712 + ... + 47429137.

It is an arithmetic number, because the mean of its divisors is an integer number (249947033047225).

It is a Poulet number, since it divides 2^{999788053140336}-1.

Almost surely, 2^{999788053140337} is an apocalyptic number.

999788053140337 is the 15809713-rd decagonal number.

It is an amenable number.

999788053140337 is a deficient number, since it is larger than the sum of its proper divisors (79048563).

999788053140337 is a wasteful number, since it uses less digits than its factorization.

999788053140337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79048562.

The product of its (nonzero) digits is 1234517760, while the sum is 76.

The spelling of 999788053140337 in words is "nine hundred ninety-nine trillion, seven hundred eighty-eight billion, fifty-three million, one hundred forty thousand, three hundred thirty-seven".