999999677341213 has 4 divisors (see below), whose sum is σ = 1052631239306560. Its totient is φ = 947368115375868.

The previous prime is 999999677341199. The next prime is 999999677341261. The reversal of 999999677341213 is 312143776999999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999999677341213 is a prime.

It is a super-2 number, since 2×999999677341213² (a number of 31 digits) contains 22 as substring.

It is the 31622772-nd Hogben 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 (999999677345213) by changing a digit.

It is a nontrivial repunit in base 31622771.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26315780982645 + ... + 26315780982682.

It is an arithmetic number, because the mean of its divisors is an integer number (263157809826640).

Almost surely, 2^{999999677341213} is an apocalyptic number.

It is an amenable number.

999999677341213 is a deficient number, since it is larger than the sum of its proper divisors (52631561965347).

999999677341213 is a wasteful number, since it uses less digits than its factorization.

999999677341213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52631561965346.

The product of its digits is 11249543088, while the sum is 88.

The spelling of 999999677341213 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, six hundred seventy-seven million, three hundred forty-one thousand, two hundred thirteen".