999605018701 has 16 divisors (see below), whose sum is σ = 1007436137920. Its totient is φ = 991796451840.

The previous prime is 999605018677. The next prime is 999605018707. The reversal of 999605018701 is 107810506999.

It is a 5-Lehmer number, since φ(999605018701) divides (999605018701-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 999605018701 - 2⁵ = 999605018669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999605018707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385500061 + ... + 385502653.

It is an arithmetic number, because the mean of its divisors is an integer number (62964758620).

It is a Poulet number, since it divides 2^999605018700-1.

Almost surely, 2^999605018701 is an apocalyptic number.

It is an amenable number.

999605018701 is a deficient number, since it is larger than the sum of its proper divisors (7831119219).

999605018701 is a wasteful number, since it uses less digits than its factorization.

999605018701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5836.

The product of its (nonzero) digits is 1224720, while the sum is 55.

The spelling of 999605018701 in words is "nine hundred ninety-nine billion, six hundred five million, eighteen thousand, seven hundred one".